Yahoo Instant Messenger Under Attack Again or Still?

A new variant of an old Yahoo Instant Messenger Worm spreading fast.

In business, when something works, why bother to reinvent the wheel. A little nip here; a little tuck there and hey – you’re still in business! No surprise then, when we see that cybercriminals subscribe to this business philosophy.

Programs such as MSN Messenger, Yahoo! Messenger, AIM, etc, are wildly popular with users who want real-time computer contact with each other, and so, they form a perfect attack vector for malware distribution.

Symantec, along with a number of other security providers, are warning users of Yahoo Instant Messenger specifically, they are being targeted by a new variant of an old IM Worm, identified by Symantec as W32.Yimfoca.

(Graphics courtesy of Symantec)

If you are a Yahoo Instant Messenger user, you need to be particularly cautious, at the moment, in saving what appears to be a JPG or GIF file, but in fact could easily be this malicious executable.

This threat drops a worm which will lead to the attacker taking control of the victim’s computer. Additionally, the Worm is programmed to attack those in the victim’s contact list.

Given the frequency with which instant messaging is used to distribute malware (recent statistics indicate almost 50% of worms use this method to spread), the following is a series of sensible tips for users to get the most out of these programs, securely and responsibly.

As with any other application you use on the Internet, having the knowledge that allows you to use it safely, and being aware of current threats, will make for a more positive experience when using these wildly popular applications.

Sensible tips for users to get the most out of these programs, securely and responsibly.

You need to be alert to the dangers in clicking on links or downloading files from sources that are not known to you. Even if the files or links apparently come from someone you know, you have to be positive that it really was this person who has sent the message.

Check with your contact to be sure the files or links are genuine. Remember, if you click on those links or run those attachments without confirmation, you run the risk of letting malware into your computer.

Use only secure passwords and be sure to change them regularly. The longer and more varied they are – using a variety of different characters and numbers – the more secure they will be.

Revealing confidential or personal information in these types of conversations can make you an easy target for Internet predators. For added protection when using a public computer, ensure that you disable any features that retain login information to prevent other users from gaining access to your instant messaging once you leave.

It’s virtually impossible to avoid publishing your email address on the Internet, however, do so only when absolutely necessary. Cyber criminals are always on the lookout for accounts to target.

Above all, if you are a parent, take exceptional care with the access that your children have to these programs. The risk here goes beyond malware, as sadly, they could come into contact with undesirable, or even dangerous individuals.

Elsewhere in this Blog, you can read an article on protecting your children on the Internet and download free software to help you do this.

Click here: “Keep Your Kids Safe With Free Parental Control Bar”.

If you found this article useful, why not subscribe to this Blog via RSS, or email? It’s easy; just click on this link and you’ll never miss another Tech Thoughts article.

Avoid Worms – Instant Messaging Tips

I wrote earlier today about a new worm currently circulating on the Internet, which Panda Security identifies as the MSNWorm.GU.

This worm uses MSN Messenger, and other chat applications, to spread. It infects systems silently, and without any visible symptoms.

Infection occurs when the victim clicks on a download link contained in a message received from a contact. Clicking on the link installs the worm on the target system, and the infection begins.

So, is there anything unusual about this worm; is it just a one off occurrence? Not at all – instant messaging, unfortunately, is a primary channel used by cyber-criminals to distribute malware. In fact, recent statistics indicate almost 50% of worms use instant messaging applications to spread.

Regrettably, from a security perspective these applications can present considerable security risks. Security risks increase  substantially when these programs are used to share files, folders, or in some cases even entire drives.

As with any other application you use on the Internet, having the knowledge that allows you to use it safely, and being aware of current threats, will make for a more positive experience when using these wildly popular applications.

The following is a series of sensible tips for users to get the most out of these programs, securely and responsibly.

You need to be alert to the dangers in clicking on links or downloading files from sources that are not known to you. Even if the files or links apparently come from someone you know, you have to be positive that it really was this person who has sent the message.

Check with your contact to be sure the files or links are genuine. Remember, if you click on those links or run those attachments without confirmation, you run the risk of letting malware into your computer.

Use only secure passwords and be sure to change them regularly. The longer and more varied they are – using a variety of different characters and numbers – the more secure they will be.

Revealing confidential or personal information in these types of conversations can make you an easy target for Internet predators. For added protection when using a public computer, ensure that you disable any features that retain login information to prevent other users from gaining access to your instant messaging once you leave.

It’s virtually impossible to avoid publishing your email address on the Internet, however, do so only when absolutely necessary. Cyber criminals are always on the lookout for accounts to target.

Above all, if you are a parent, take exceptional care with the access that your children have to these programs. The risk here goes beyond malware, as sadly, they could come into contact with undesirable, or even dangerous individuals.

Elsewhere in this Blog, you can read an article on protecting your children on the Internet and download free software to help you do this.

Click here: “Parental Control Bar”

On the whole, the best protection against Instant Messaging threats involves having good antivirus and firewall protection to guard your security at all times. Elsewhere in this Blog, you can read an article on free security software and download those you might find useful.

Click here: “Best Free Security Applications”

For information on how Skype has become open to scamming, read the article Skype says I’m infected with malware … by my tech wizard friend Techpaul.

If you enjoyed this article, why not subscribe to this Blog via RSS, or email? It’s easy; just click on this link and you’ll never miss another Tech Thoughts article.

Safety Tips For Instant Messaging

Programs such as MSN Messenger, Yahoo! Messenger, AIM, etc, are wildly popular with users that want real-time computer contact with each other. The danger, from an Internet security perspective, occurs when these programs are used to share files, folders, and in some cases entire drives.

Given the frequency with which instant messaging is used to distribute malware (recent statistics indicate almost 50% of worms use this method to spread), the following is a series of sensible tips for users to get the most out of these programs, securely and responsibly.

You need to be alert to the dangers in clicking on links or downloading files from sources that are not known to you. Even if the files or links apparently come from someone you know, you have to be positive that it really was this person who has sent the message. Check with your contact to be sure the files or links are genuine. Remember, if you click on those links or run those attachments without confirmation, you run the risk of letting malware into your computer.

Use only secure passwords and be sure to change them regularly. The longer and more varied they are – using a variety of different characters and numbers – the more secure they will be.

Revealing confidential or personal information in these types of conversations can make you an easy target for Internet predators. For added protection when using a public computer, ensure that you disable any features that retain login information to prevent other users from gaining access to your instant messaging once you leave.

It’s virtually impossible to avoid publishing your email address on the Internet, however do so only when absolutely necessary. Cyber criminals are always on the lookout for accounts to target.

Above all, if you are a parent, take exceptional care with the access that your children have to these programs. The risk here goes beyond malware, as sadly, they could come into contact with undesirable or even dangerous individuals. Elsewhere in this Blog, you can read an article on protecting your children on the Internet and download free software to help you do this.

Click here: Parental Control Bar

On the whole, the best protection against Instant Messaging threats involves having good antivirus and firewall protection to guard your security at all times. Elsewhere in this Blog, you can read an article on free security software and download those you might find useful.

Click here: Best Free Security Applications

For information on how Skype has become open to scamming read the article Skype says I’m infected with malware… by my tech wizard friend Techpaul.

Instant Messaging – Practical Safety Tips

Programs such as MSN Messenger, Yahoo! Messenger, AIM, etc, are widely used by users that want real-time contact with each other. The danger, from a security perspective, occurs when these programs are used to share files, folders, or even entire drives.

Given the frequency with which instant messaging is used to distribute malware (in July, 2007 almost 50% of worms used this method to spread), the following is a series of practical tips for users to get the most out of these programs, securely and responsibly.

The first of these is to be mindful of the dangers of clicking on links or downloading files from unknown sources. Even if the files or links seemingly come from a known contact, you have to be sure that it really was this person who has sent the message; that it has not been generated automatically by malicious code. To do this, simply ask your contact about the files they have sent you; if they have been sent by malicious code, your contact will be unaware. Remember, if you click on those links or run those attachments, you could well be letting malware into your computer.

You should always remember to make sure the passwords you use are secure. The longer and more varied they are –using a range of different characters for example- the more secure they will be. Combining letters and numbers and using upper-case characters will help make a password more secure.

Never reveal confidential or personal information in these types of conversations, or you will be easy prey for intruders. This is particularly important in corporate environments, as confidential corporate information is a favorite target of cyber-crooks. Similarly, when using a public computer, make sure that you disable any features that remember login details to prevent other users from having free access to your instant messaging.

Try to avoid publishing your email address on the Internet, as this will just give spammers another account to target, possibly even with malicious code.

Finally, take special care with the access that children have to these programs. The risk here goes beyond malware, as, sadly, they could come into contact with undesirable or even dangerous individuals. Elsewhere in this Blog, you can read an article on protecting your children on the Internet and download free software to help you do this.

Click here: Parental Control Bar

Overall, the best protection against these types of threats involves having good antivirus and firewall protection to watch over your security at all times. Elsewhere in this Blog, you can read an article on free security software and download those you might find useful.

Click here: Best Free Security Applications