Medchemexpress is an app? or virus????

Hi everyone!!!!There's something strange on my Mac...Every page I'm going to visit on internet has this site as advertising...www.medchemexpress.com...I'm not a doctor or medicine interested....but it's not possible..in every single page I'm visiting...I found this adv...
Is it possible It s a malware, trojan or a virus???I launched Viruss barrier, and I antvirus...they didn't find anything
any suggestion??
thank you all

So, if I'm understanding you correctly, it doesn't matter where you go - google.com, apple.com, facebook.com, wherever - instead, you get redirected to that site? If so, that is most likely to be a network compromise, probably a wireless router hack. See How to manage a hacked wireless router.
There's a chance that you have adware installed, but this is not documented behavior for any of the adware programs I'm aware of.
(Fair disclosure: The Safe Mac is my site, and contains a Donate button, so I may receive compensation for providing links to The Safe Mac. Donations are not required.)

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Installing an app for viruses

This question may seem stupid to some but i just got a new macbook and i don't know if i should install an application to protect it against viruses. I heard once that MacBooks are already virus proof, but I'm not sure of this!! and is it something in the settings th

Mac users often ask whether they should install "anti-virus" (AV) software. The usual answer is "no." That answer is right, but it may give the wrong impression that there is no threat from what are loosely called "viruses." There is a threat, and you need to educate yourself about it.
1. This is a comment on what you should—and should not—do to protect yourself from malicious software ("malware") that circulates on the Internet and gets onto a computer as an unintended consequence of the user's actions.
It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the computer, or who has been able to take control of it remotely. That threat is in a different category, and there's no easy way to defend against it. AV software is not intended to, and does not, defend against such attacks.
The comment is long because the issue is complex. The key points are in sections 5, 6, and 10.
OS X now implements three layers of built-in protection specifically against malware, not counting runtime protections such as execute disable, sandboxing, system library randomization, and address space layout randomization that may also guard against other kinds of exploits.
2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user. Internally Apple calls it "XProtect."
The malware recognition database used by XProtect is automatically updated; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
The following caveats apply to XProtect:
☞ It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets.
☞ It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
As new versions of OS X are released, it's not clear whether Apple will indefinitely continue to maintain the XProtect database of older versions such as 10.6. The security of obsolete system versions may eventually be degraded. Security updates to the code of obsolete systems will stop being released at some point, and that may leave them open to other kinds of attack besides malware.
3. Starting with OS X 10.7.5, there has been a second layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't been checked for security by Apple unless it comes from the App Store, but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. That may not mean much if the developer lives in a country with a weak legal system (see below.)
Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
☞ It can easily be disabled or overridden by the user.
☞ A malware attacker could get control of a code-signing certificate under false pretenses, or could simply ignore the consequences of distributing codesigned malware.
☞ An App Store developer could find a way to bypass Apple's oversight, or the oversight could fail due to human error.
Apple has taken far too long to revoke the codesigning certificates of some known abusers, thereby diluting the value of Gatekeeper and the Developer ID program. Those lapses don't involve App Store products, however.
For the reasons given, App Store products, and—to a lesser extent—other applications recognized by Gatekeeper as signed, are safer than others, but they can't be considered absolutely safe. "Sandboxed" applications may prompt for access to private data, such as your contacts, or for access to the network. Think before granting that access. Sandbox security is based on user input. Never click through any request for authorization without thinking.
4. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). MRT runs automatically in the background when you update the OS. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is effective against known threats, but not against unknown ones. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
5. The built-in security features of OS X reduce the risk of malware attack, but they are not, and never will be, complete protection. Malware is a problem of human behavior, not machine behavior, and no technological fix alone is going to solve it. Trusting software to protect you will only make you more vulnerable.
The best defense is always going to be your own intelligence. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "Trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and Internet criminals. If you're better informed than they think you are, you'll win. That means, in practice, that you always stay within a safe harbor of computing practices. How do you know when you're leaving the safe harbor? Below are some warning signs of danger.
Software from an untrustworthy source
☞ Software with a corporate brand, such as Adobe Flash Player, doesn't come directly from the developer’s website. Do not trust an alert from any website to update Flash, or your browser, or any other software. A genuine alert that Flash is outdated and blocked is shown on this support page. Follow the instructions on the support page in that case. Otherwise, assume that the alert is fake and someone is trying to scam you into installing malware. If you see such alerts on more than one website, ask for instructions.
☞ Software of any kind is distributed via BitTorrent, or Usenet, or on a website that also distributes pirated music or movies.
☞ Rogue websites such as Softonic, Soft32, and CNET Download distribute free applications that have been packaged in a superfluous "installer."
☞ The software is advertised by means of spam or intrusive web ads. Any ad, on any site, that includes a direct link to a download should be ignored.
Software that is plainly illegal or does something illegal
☞ High-priced commercial software such as Photoshop is "cracked" or "free."
☞ An application helps you to infringe copyright, for instance by circumventing the copy protection on commercial software, or saving streamed media for reuse without permission. All "YouTube downloaders" are in this category, though not all are necessarily malicious.
Conditional or unsolicited offers from strangers
☞ A telephone caller or a web page tells you that you have a “virus” and offers to help you remove it. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
☞ A web site offers free content such as video or music, but to use it you must install a “codec,” “plug-in,” "player," "downloader," "extractor," or “certificate” that comes from that same site, or an unknown one.
☞ You win a prize in a contest you never entered.
☞ Someone on a message board such as this one is eager to help you, but only if you download an application of his choosing.
☞ A "FREE WI-FI !!!" network advertises itself in a public place such as an airport, but is not provided by the management.
☞ Anything online that you would expect to pay for is "free."
Unexpected events
☞ A file is downloaded automatically when you visit a web page, with no other action on your part. Delete any such file without opening it.
☞ You open what you think is a document and get an alert that it's "an application downloaded from the Internet." Click Cancel and delete the file. Even if you don't get the alert, you should still delete any file that isn't what you expected it to be.
☞ An application does something you don't expect, such as asking for permission to access your contacts, your location, or the Internet for no obvious reason.
☞ Software is attached to email that you didn't request, even if it comes (or seems to come) from someone you trust.
I don't say that leaving the safe harbor just once will necessarily result in disaster, but making a habit of it will weaken your defenses against malware attack. Any of the above scenarios should, at the very least, make you uncomfortable.
6. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was always a bad idea, and Java's developers have proven themselves incapable of implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style virus affecting OS X. Merely loading a page with malicious Java content could be harmful.
Fortunately, client-side Java on the Web is obsolete and mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice. Forget about playing games or other non-essential uses of Java.
Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable it—not JavaScript—in your browsers.
Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a task on a specific site, enable Java only for that site in Safari. Never enable Java for a public website that carries third-party advertising. Use it only on well-known, login-protected, secure websites without ads. In Safari 6 or later, you'll see a padlock icon in the address bar when visiting a secure site.
Stay within the safe harbor, and you’ll be as safe from malware as you can practically be. The rest of this comment concerns what you should not do to protect yourself.
7. Never install any commercial AV or "Internet security" products for the Mac, as they are all worse than useless. If you need to be able to detect Windows malware in your files, use one of the free security apps in the Mac App Store—nothing else.
Why shouldn't you use commercial AV products?
☞ To recognize malware, the software depends on a database of known threats, which is always at least a day out of date. This technique is a proven failure, as a major AV software vendor has admitted. Most attacks are "zero-day"—that is, previously unknown. Recognition-based AV does not defend against such attacks, and the enterprise IT industry is coming to the realization that traditional AV software is worthless.
☞ Its design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere. In order to meet that nonexistent threat, commercial AV software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
☞ By modifying the operating system, the software may also create weaknesses that could be exploited by malware attackers.
☞ Most importantly, a false sense of security is dangerous.
8. An AV product from the App Store, such as "ClamXav," has the same drawback as the commercial suites of being always out of date, but it does not inject low-level code into the operating system. That doesn't mean it's entirely harmless. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
An AV app is not needed, and cannot be relied upon, for protection against OS X malware. It's useful, if at all, only for detecting Windows malware, and even for that use it's not really effective, because new Windows malware is emerging much faster than OS X malware.
Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else. A malicious attachment in email is usually easy to recognize by the name alone. An actual example:
London Terror Moovie.avi [124 spaces] Checked By Norton Antivirus.exe
You don't need software to tell you that's a Windows trojan. Software may be able to tell you which trojan it is, but who cares? In practice, there's no reason to use recognition software unless an organizational policy requires it. Windows malware is so widespread that you should assume it's in every email attachment until proven otherwise. Nevertheless, ClamXav or a similar product from the App Store may serve a purpose if it satisfies an ill-informed network administrator who says you must run some kind of AV application. It's free and it won't handicap the system.
The ClamXav developer won't try to "upsell" you to a paid version of the product. Other developers may do that. Don't be upsold. For one thing, you should not pay to protect Windows users from the consequences of their choice of computing platform. For another, a paid upgrade from a free app will probably have all the disadvantages mentioned in section 7.
9. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.
10. As a Mac user, you don't have to live in fear that your computer may be infected every time you install software, read email, or visit a web page. But neither can you assume that you will always be safe from exploitation, no matter what you do. Navigating the Internet is like walking the streets of a big city. It can be as safe or as dangerous as you choose to make it. The greatest harm done by security software is precisely its selling point: it makes people feel safe. They may then feel safe enough to take risks from which the software doesn't protect them. Nothing can lessen the need for safe computing practices.

Does apple check mac app store apps for viruses and malware?

Are all of the apps submitted to the Mac App Store check to make sure they dont have viruses in them? I just wanted to make sure before i go and start downloading a lot of applications from there.
Thanks for taking the time to respond.

The Apple Support Communities are an international user to user technical support forum. As a man from Mexico my first language is Spanish. I do not speak English, however I do write in English with the aid of the Mac OS X spelling and grammar checks. I also live in a culture perhaps very very different from your own. When offering advice in the ASC, my comments are not meant to be anything more than helpful and certainly not to be taken as insults.
Yes all apps in the MAS are virus free.

Rogue App or Virus on iphone, help needed to delete

Greetings,
Recently my phone starting going haywire - I would click an app or try to text and it would appear that I pressed a different app or when I would type it would enter a bunch of other letters or numbers. I discovered a new app on my phone that I did not download. I only get apps from iTunes and I did not jailbreak my phone. I have included a pic of the program called mfiTmitupxhw (bottom right of pic). When I try to delete it, it says " Delete Icon ~ Are you sure you want to delete the bookmark "mfiTmitupxhw"?" I always cancel because I want the program or app deleted, not just the bookmark. I am worried the program is running in the background. I tried syncing with iTunes, but it was still there. Can anyone help me with deleting this program? The phone seems to be running okay now, no funky stuff happening, but I'm still worried what the heck this program is! Thanks!

Okay, it took me a little bit but I finally see what you are both saying and see what probably happened. Still not sure what made my phone go haywire, but it seems to be resolved. I'm hoping to get a new phone soon anyway and will leave this old one far, far away.

HT3662 Have at least a malware, or it could be worst. Need to know where in app store "Virus Barrier or CLANXAV

I am not sure exactly what happen, but I was reading my e-mail and I like the article. Since I was slow in typing , I notice some strange additional typing not my own while checking my spelling/tenses. Frankly, in my personal opinion, it is more a of compliment for the well- written article I meant to the people very close to me. I think nothing of the offensive insertions which whoever wrote must be in real bad mood to disagree with my point of view. That is if anybody can do that i must have a malware , a trojan, or must be re-directed. I took out the offensive words, put my own opinion & sent my e-mail which failed. Need to verify if it is true?

I'm afraid I have no idea what you're talking about. Can you be a little clearer about exactly what happened? It sounds like someone may have modified something you wrote somewhere, but I have no idea where or how. Getting a clear description of the symptoms will be extremely important for identifying the cause.
Your profile indicates that you are running the latest version of Mountain Lion (Mac OS X 10.8.5), but you have posted in the Leopard (Mac OS X 10.5) forum. Which system are you running? (Check by choosing About This Mac from the Apple menu).
I suspect, since you mentioned the App Store in your subject, that you are running Mountain Lion. In that case, it's very unlikely that this is malware. There is currently no known malware capable of infecting that system.

Is huggleup print app a virus?

I just noticed that one of the apps I was going to update ( by hitting update all, I had not bought or have installed). It's called Huggleup, when I looked for it in teh app store didn't find any information. Does anybody else knows?

Look at your purchase history. On the phone, go to the App Store, then tap the Updates button in the bottom right corner. Next, tap Purchased at the top of the screen. Look for HuggleUp, as well as any other apps that you don't remember installing. If there are apps on the list that you know you never purchased, and that nobody else authorized to use your Apple ID purchased on a different device, then your account may have been hacked.
An alternate explanation is that you have installed some app from outside the App Store. A common hacker trick is to insert the credentials from a free app (such as HuggleUp) into an app that should cost money, then make the hacked app available online for free. If you have done whatever is necessary to install such an app, you need to immediately restore your phone to factory defaults, without restoring from backups, and set it up as a brand new phone.

Please add Virus detection App on EX

Please add an App for Virus detection and deletion. Would be gread to have also on Ex an Virus programm to be secure for any virus attact on the network. Regulary computers in the networks are seruce by installing AntiVirus programs. If users enable an all-day sync to the Network storage for data sync there is a high risk to copy an virus to the storage.

you ask and they do it, not bad....

Scans uncover same viruses/problems again and again even after quarantine and/or delete

I am on a MAC and I get endless 'rotating beachball.' A nightmare.

How are these issues reported by AV scanning software?
*https://itunes.apple.com/us/app/bitdefender-virus-scanner/id500154009?mt=12
*http://www.clamxav.com/download.php
*http://www.sophos.com/en-us/products/free-tools/sophos-antivirus-for-mac-home-edition/download.aspx
Create a new profile as a test to check if your current profile is causing the problems.
See "Creating a profile":
*https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
If the new profile works then you can transfer some files from an existing profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem.
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Weird file or an invisible App

Hi everyone! Well I have a problem with my iPhone 5s ... There is a weird file or an invisible app called "monanngon" what should I do to delete this weird thing?

MrWoppit wrote:
I have put a more complete answer here:-
Re: Monanngon
But the short answer is that monanngon seems to be a rogue app or virus that is only detected by Battery Doctor, and the only way to get rid of it is to reset the iPhone, then download the apps that you need.
You have no evidence for the claims you are making. It is just as likely that this is a bug in Battery doctor itself.

HELP!!!! MSN Messenger Virus- how do I get rid of it????

Hi all,
I seem to have a virus on my MSN Messenger - it keeps sending my contacts a link every time I log in: This is the link that gets sent???
http://ginajones123.imgfriendz.com:6478
I've looked on the net and there is only info on how to stop this on a PC, no info about macs. If anyone could help me that would be much appreciated - it's driving me CRAZY
Thanks

HI Gina and Welcome to Apple Discussions...
Since you run MSN Messenger on your Mac you are vulnerable to trojan horse apps and virus. You might want use an anti-virus program like this: http://www.clamxav.com/
MSN Messenger is after all a Microsoft product.
Do a Google search for: MSN Messenger for Mac and virus problems and check out the hits.
Carolyn

How to extract client source ip, which has been embedded in http header?

Can someone please tell me how to extract the client source ip which has been embedded in http header?
the web server is running SunOS 5.8 and iPlanet6.0sp6
Thanks.

Clear the cache and cookies.
"Clear the Cache":
*Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"
"Remove Cookies":
*Firefox/Tools > Options > Privacy > Cookies: "Show Cookies"
Create a new profile as a test to check if your current profile is causing the problem.
See "Creating a profile":
*https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
If the new profile works then you can transfer some files from an existing profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox
*https://itunes.apple.com/us/app/bitdefender-virus-scanner/id500154009?mt=12

Flash Player 11.7 is not working on my Mac

I'm going crazy! I have "successfully" installed Flash Player 11.7 SEVERAL times.....but not once was able to get it to work. I cannot watch video, youtube or play games on Facebook.
I have done a complete Clean Uninstall of any trace of flash player and turned off all Firewalls, Apps, Anti-virus programs running AND THEN REINSTALLED SUCCESSFULLY - all to no success with it to work.
I see this is a big issue for many people trying to get this to work yet no real help from Adobe!
My Safari 6.0.5
Using OS X Version 10.8.4
Processor 2.6 GHz Intel Core i7
Memory 16 GB 1600 MHz DDR3
Will you please include a step by step process to FIX this issue to get YOUR PRODUCT TO WORK - THAT SO MANY DEPEND ON!
This is causing a HUGE SETBACK FOR ME WITH WHAT I NEED TO USE THIS PROGRAM FOR
Now who can help me out? Lets get this thing fixed and rolling!
Message was edited by: dj1126

Adobe InDesign crashes when trying to print

I use Adobe CS4 regularly. I could print fine from all apps in CS4 until yesterday when I tried to print from InDesign CS4 and the app crashed. All other apps in CS4 print fine, as do all other apps. I've attempted to create a new print preset and also tried to edit the printer default, but InDesign crashes every time. Has this happened to anyone else?
The only things I've done differently (or new) was to test a new antivirus app (Anti-Virus Software for Mac Protection | Kaspersky Lab United States) and also to download and try out the new Firefox 11. I also created a couple of pdf files in InDesign (as I've done dozens of times with no problems).
The printer is an Epson all-in-one WorkForce 630, and I have confirmed that I'm using the latest drivers. I've done restarts and shutdowns. Nothing seems to help, and only InDesign CS4 seems to be affected.
ANY help would be greatly appreciated...and thanks in advance for your input.

Forgot to mention that I can still create pdf files using the CS4 presets, and can also continue to work on files and save them but the only way to print is by creating a pdf file and printing that.

How do i stop a new tab opening to a product advertising everytime i click on an item in an exisiting tab?

i was in a Mango Online tab. when clicked on a product for further details, a new tab eg: alibaba.com opens up automatically. this issue occured when i installed the Microsoft software update. Does it have anything to do with the new update? And, how do i stop the new advertising tab from opening/recurring?

You can check if you can start Firefox in <u>[[Safe Mode|Safe Mode]]</u> by holding down the Shift/Options key.
Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.
*Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
*Do NOT click the Reset button on the Safe Mode start window
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
http://www.google.com/search?q=mac+malware+scan
https://itunes.apple.com/us/app/bitdefender-virus-scanner/id500154009?mt=12
http://www.clamxav.com/download.php

Yosemite how can I get it loaded

I tried last week to load Yosemite to no avail just ended up with the white bar stuck about a third along Apple could not help and I went back to Mavericks.
After following this community I tried again last night following the steps other people had tried switching off WiFi, deleting start up apps , deleting virus checker starting in safe mode all to end up in he same position as I was before with the bar stuck in the same position.
I did a safe boot which got me Yosemite but it was slow had a flickering screen and as soon as I rebooted it went back to the stuck bar.
Now back on Mavericks does anyone have any ideas or am I stuck with mavericks I have a Mac 27 about 6 months old .

Hi Sylvia,
If you double click on the Macintosh HD, you'll see the System folder which leads to /System/Library/CoreServices/Menu\ Extras/Volume.menu. In the Menu Extras, you'll see all the extra menus for all the extra menus. It's very interesting although most people won't need all of the extra menus.
Have fun,
kel

Medchemexpress is an app? or virus????

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