New research published by Sophos today reveals a 70 percent increase in the number of companies reporting spam and malware attacks via social networks.

Technology blog TechCrunch has been hacked for the second time in 24 hours.

The immensely popular blog TechCrunch has been compromised by hackers who posted an offensive message on its home page.

An Internet rumor that Hollywood superstar Johnny Depp has died in a French car crash is being taken advantage of by cybercriminals, who have planted malware posing as video footage of the accident.

The IT world sighed with relief at the news that Microsoft is releasing an out-of-band patch for Internet Explorer on Thursday, Jan. 21.

China's No. 1 Website has fallen victim to a group of hackers calling themselves the "Iranian Cyber Army," who replaced the site's home page with a political message.

Facebook is making major changes to its privacy settings, giving you the opportunity to share your personal information with "everyone" on the Internet. But is that wise?

The latest iPhone worm is much more malicious than the last one.

Is it any wonder that the criminal underground is embracing the Internet? The fortunes to be made through spam and search-engine poisoning are enormous.

Users of insecure, jailbroken iPhones are reporting their smartphones have been hit by a worm that turns their lock wallpaper to that of 1980s pop star Rick Astley.

Is that computer sitting on your desk secretly a zombie? If so, it could be contributing to the millions of spam messages being pumped out of your country every day.

Cybercriminals have bombarded inboxes around the world with what purports to be a contract but in reality delivers fake antivirus alerts on unsuspecting users' screens.

An Internet rumor that controversial rapper Kanye West has died in a Los Angeles car crash is being taken advantage of by cybercriminals, bent on stealing money through fake antivirus alerts.

Malicious hackers are poisoning search engines to entrap computer users hunting for the latest news on the Falcon Heene case.

This isn't any regular Patch Tuesday. This one is a monster.

Scareware attacks, in which hackers try to frighten innocent users into believing that their computers areinfected with viruses, are on the rise, and the cybercriminals behind them are exploiting hot news stories like never before.

If you upgraded your Mac to run Snow Leopard, then you would be wise to double-check that it's still protected against security vulnerabilities.

You couldn't have missed that Apple just released Snow Leopard, the latest version of its Mac OS X operating system.

Hackers are once again targeting players of the fantasy game "World of Warcraft" in an attempt to steal passwords and other game credentials.

A security researcher has uncovered a serious security vulnerability in Facebook that gives hackers a silent method to steal users' personal information, such as their full names, profile pictures, and friends lists.

The pro-Georgian blogger at the eye of the denial-of-service storm that brought down Twitter on August 6 has called on Russian President Dmitry Medvedev to find those responsible for the attacks.

Microsoft has announced that on Tuesday it will release a total of nine bulletins to patch a wide range of serious vulnerabilities, including some that affect Mac users.

Self-confessed hacker Gary McKinnon has lost a judicial review in London that he hoped would have lead to a British investigation into his case, rather than extradition to the United States.

The Dilbert comic strip is loved around the world for its satirical look at life in the corporate office. But now identity thieves and scammers are exploiting the popular Dilbert.com Website in their hunt for potential victims.

It was early Sunday morning British time when I first heard the name "Erin Andrews." I didn't have a clue who she was -- I don't follow the American sports scene -- but one thing was certain: She was creating an enormous buzz on the Internet.

Hell hath no fury like an IT support administrator scorned. At least that's the message being heard loud and clear by firms that are finding their networks at risk of attack from former employees.

Hackers are taking advantage of American Independence Day celebrations by spamming out what pretends to be a link to a Fourth of July fireworks show, but is really an attempt to infect computers.

It took a mere eight hours for cybercriminals to take advantage of the death of pop superstar Michael Jackson.

Facebook's security has been called into question after the creators of a new blog discovered a hack that can expose private profile information of any user.

Hackers have spammed out a widespread attack to unsuspecting computer users, disguised as an electronic greeting card.

Fueled by hype generated by celebrity devotees like Oprah, Ashton Kutcher, and Stephen Fry, it seems like everyone is jumping on board the Twitter train.

Internet service provider Pricewert -- which trades under names such as 3FN and APS Telecom -- has been shut down and disconnected from cyberspace following allegations it was knowingly involved in major spam attacks, phishing campaigns, malware distribution, and child abuse.

When the National Archives lost a hard drive containing records from the Clinton administration, they also realized more than 100,000 social security numbers were missing.

Thursday wasn't a good day for Twitter security: The site was rocked by two new phishing attacks that attempted to steal identities from a large number of users.

Is Microsoft treating users of the Mac version of its PowerPoint software as second-class citizens? That's the question some are asking following the release of a criticial security update for the popular presentation software. The problem? The patch was only for the Windows version.

A 19-year-old man has admitted to launching a distributed denial-of-service (DDoS) attack that brought down Scientology Websites.

I never thought I would be thanking spammers for anything -- but they're the ones who reminded me about Mother's Day.

Facebook has moved quickly to patch a security loophole that potentially allowed identity thieves and spammers to gather users' personal email addresses.

Twitter is growing at phenomenal speed -- but this week's breach by a French hacker who accessed the accounts of Britney Spears, Barack Obama, and others proves it's time for the service to show a more mature attitude to security.

I can't put this any more plainly: If you use Adobe Reader, I urge you to disable its JavaScript support today.

How important is it for you to be able to access your data? Would you pay money to recover your data if a hacker stole it?

Another weekend, another attack on Twitter users. On the same day word surfaced that 17-year-old Mikeyy Mooney had been offered a job on the back of the Twitter worms he had written, a new version of his Twitter worm was unleashed.

The teenage author of the Mikeyy and StalkDaily worms that hit Twitter users hard one weekend ago appears to have struck lucky. As a result of his infamy, he has a brand new job.

A new cross-site scripting worm is hitting Twitter users less than 24 hours after StalkDaily embedded itself in profiles across the micro-blogging system. This time it appears to be inspired by StalkDaily's alleged author, the mysterious Mikeyy Mooney.

If anyone was in any doubt that social networks are the new battleground for cybercriminals, then just log in to Twitter right now. The hugely popular micro-blogging network is overrun with warnings about messages referring to a website called StalkDaily.com, said to be spreading through compromised Twitter accounts.

With all the focus on the Conficker worm in recent weeks, it should come as no surprise at all to find that cybercriminals are taking advantage of the headline-grabbing worm for their own ends.

You may have experienced the soul-destroying feeling of sitting through a far-too-long corporate presentation, but a new critical flaw could deliver a far more serious case of "Death by PowerPoint."

Even though April 1st is now history, you would be foolish to think the Conficker worm is no longer a problem. It's still out there, still causing a nuisance, and could be instructed to activate a payload whenever the hackers choose. So what you want is a quick and easy way to tell if you might be infected, right?

It's 6:30 a.m. on April Fool's Day here in the U.K., and so far we've not seen any evidence of the Conficker worm "melting your computer," turning off the nation's air defenses, or dialing the local pizza company. My guess is that -- as widely predicted by the security vendors -- Conficker and April 1st was mostly about hype rather than havoc.

While the world is holding its breath, wondering whether the Conficker worm is going to do anything dramatic on April 1st (I'm placing money that no computers are reported to have melted by the end of the day, and the Internet won't have turned to blancmange), perhaps a more important question is: Are we ever going to catch the pond life who wrote it?