Hundreds of thousands of Internet users whose computers are infected with a particularly nasty virus are now unable to access the Web.
Last week, groups of congressional staffers gathered in conference rooms in the nation's capital. They were coming to hear from a representative from Symantec about the current threat landscape in cyberspace.
CNN's Phil Black meets one of the experts who discovered Flame malware, considered the world's biggest cyber weapon.
The recently discovered Flame virus bears all the hallmarks of a cyberattack concocted by a nation-state. It's big and complex and pointed directly at a geopolitical hot zone, Iran.
A massive, highly sophisticated piece of malware has been newly found infecting systems in Iran and elsewhere and is believed to be part of a well-coordinated, ongoing, state-run cyberespionage operation.
The discovery of a malicious computer program that appears to be collecting sensitive information from Iran and others indicates the global cyberwar has moved to a new level, warn security experts.
In the wake of a multi-million-dollar online scam, more than 300,000 computer users worldwide could find themselves without Web access this summer.
Apple says a new software update provides tools to get rid of the so-called "Flashback" virus that has infected hundreds of thousands of Mac computers.
Android users beware. Download the wrong version of your favorite pig-killing game and the birds won't be the only ones who are angry.
A computer virus campaign is targeting opponents of Russian President-elect Vladimir Putin, according to anti-virus software maker Symantec.
Large crowds turned out after Friday prayers in familiar hotspots where anti-Syrian government sentiment runs high.
In Syria's cyberwar, the regime's supporters have deployed a new weapon against opposition activists -- computer viruses that spy on them, according to an IT specialist from a Syrian opposition group and a former international aid worker whose computer was infected.
CNN's Jill Dougherty reports on the IAEA report that shows Iran is capable of building nuclear weapon.
A report expected this week from the International Atomic Energy Agency (IAEA) has Israel abuzz with talk of the potential for a pre-emptive strike on Iran's nuclear facilities.
Iran's efforts to develop its nuclear program have been stymied by a raft of challenges from international sanctions and set back by the 2010 Stuxnet cyberattack, two new reports from a Washington nuclear think tank conclude.
If your computer is infected, it's probably because of something you did, according to a Microsoft study released this week.
Hacker group The Script Kiddies successfully hacked another news organization when it logged onto USA Today's Twitter page and posted false statements Sunday evening. USA Today promptly removed the messages and posted a statement about the hack.
Cyber-security expert Mikko Hypponen talks about the evolution of computer viruses and why we need more protection.
If you've seen the 1983 movie "WarGames," in which a young Matthew Broderick accidentally uses computers to bring the world to the edge of "global thermonuclear war," then you have a pretty good idea what hackers and security researchers are super-concerned about these days -- in real life.
Geography used to matter in crime.
As Android devices get more popular (today comScore reports Android phones comprise 40% of the U.S. smartphone market), they're becoming a more attractive target for cybercriminals. If you use an Android smartphone, you are now 2.5 times more likely to encounter malware (malicious software) than you were six months ago.
Google said Wednesday that it has begun to display a malware warning in its search results to a group of users with infected computers.
The more people rely on cell phones and tablets, the more attractive these devices become as targets to thieves and other nefarious types.
Apple has decided to publicly acknowledge the Mac Defender malware that seems to be creeping onto Mac users' computers.
A new piece of malware has caused an uptick in Apple customers reporting infected machines, renewing a timeless debate on the state of Macintosh security versus Windows.
CNN's Brian Todd looks into the second cyber attack against an Iranian nuclear facility and who may be responsible.
Iran has been targeted by a new computer worm named Stars, according to an Iranian official.
Have you heard the scary news about 'LizaMoon,' a malicious code attack that has already infected more than a million websites?
A cyber attack Friday morning hit 40 South Korean websites, including those of several government agencies and major banks, the country's internet security agency said.
In September, a researcher explained why Stuxnet is such a dangerous worm.
A highly complex computer attack that may have been targeting Iran's nuclear power plants is posing a serious security threat to critical infrastructure worldwide, according to government and cyber-industry experts testifying Wednesday on Capitol Hill.
In the future, warfare may shift from a battlefield to a keyboard.
Iran arrested a number of "nuclear spies," its intelligence minister said, in the wake of widespread reports of a sophisticated new computer virus that may have been aimed at Iran.
Internet security agents say Iran is being targeted by a computer worm. Expert Gerry Egan explains the threat.
Stuxnet is viewed as potentially the most dangerous piece of computer malware discovered. It's been developed on an unprecedented scale and has the ability to target and control specified industrial machinery.
Recently, we completed an intensive, bipartisan six-month study on cybersecurity and presented it to the Senate Select Committee on Intelligence.
We all know about spam -- clogging up our inboxes with ads for Viagra and too-good-to-be-true offers from renegade African diplomats.
Smartphones aren't just smart, they're personal computers. Unlike a desktop or even a laptop PC, those devices and other mobile phones can easily slip out of a pocket or purse, be left in a taxi, or get snatched off a table.
This week's arrests of three men in connection with one of the world's largest computer-virus networks may seem like great news -- perhaps even a sign authorities are starting to win the war against cyberthieves.
It was a good year for cyber crime - that's bad news for e-commerce. CNN.com's Kevin Voigt explains.
The past 12 months have been a banner year for cyber crime. And that could be bad news for the future of e-commerce.
If you're on Facebook, Twitter or any other social networking site, you could be the next victim.
If you're on Facebook, Twitter or any other social networking site, you could be the next victim.
If the word 'cybercrime' conjures up images of computer geeks trying to crash computers from their mothers' basements, think again.
North Korea is thought to be behind recent cyber attacks in South Korea. CNN's Sohn Jie-Ae reports.
CNN's Kristie Lu Stout talks to Kevin Voigt, CNN.com business editor, about the power of words in cyberspace
Cyber criminals are setting snares that move at the speed of news.
Mac computers are known for their near-immunity to malicious computer programs that plague PCs.
The Conficker worm is finally doing something--updating via peer-to-peer between infected computers and dropping a mystery payload on infected computers, Trend Micro said on Wednesday.
CNN.com's John Sutter explains whether the Conficker virus threat is real.
An April Fool's Day computer worm was launched on Wednesday but so far has not caused problems for the millions of computers that are believed to be infected.
Analysts in China are dismissing claims that nearly 1,300 computers in more than 100 countries have been attacked, and have become part of a cyber-espionage network apparently based in China.
Nearly 1,300 computers in more than 100 countries have been attacked and have become part of a computer espionage network apparently based in China, security experts alleged in two reports Sunday.
A computer-science detective story is playing out on the Internet as security experts try to hunt down a worm called Conficker C and prevent it from damaging millions of computers on April Fool's Day.
Wanted: computer virus writers. Must be fluent in Mandarin. Or Russian. Or Portuguese
Hackers infiltrated the diva's MySpace page last week, showing that online scammers like social networking too
Computer expert Ken Colburn talks to Veronica De La Cruz about why you shouldn't store important information on CDs.
There's an old saying in the news business that says if your mother tells you she loves you, check it out.
What began as a ninth-grade prank, a way to trick already-suspicious friends who had fallen for his earlier practical jokes, has earned Rich Skrenta notoriety as the first person ever to let loose a personal computer virus.
The nightmare begins early in the morning with an innocuous-looking e-mail on your mobile phone instructing you to check a specific Web site for information about repairing your credit score.
A disgruntled hacker with a personal grudge against Symantec, which provides anti-virus software to leading Fortune 500 companies, could be behind a new, crippling computer virus that's already hit a division of at least one big U.S. corporation on Thursday.
Apple computers have long been prized for being virus-free. But as more people use Apple products, experts say the company is increasingly becoming a target for cyber pranksters and criminals writing viruses and other forms of malware.
When it comes to cell phones, the smarter they are, the harder they fall - for viruses.
What do Trojan Horses, the Kama Sutra and a worm have in common?
Many computer users around the globe apparently heeded the warnings about a worm with a sexy name and took precautions to protect their data from the destruction of "Kama Sutra."
"There are a lot of people who are going to be very unhappy on the third of February," said Professor Merrick Furst from the Georgia Tech College of Computing.
Windows users worried about malicious attacks helped prod Microsoft to release a patch for a vulnerability five days earlier than expected.
Microsoft has released a patch for a vulnerability in some Windows graphics files.
A computer worm unleashed itself on systems running Microsoft's Windows 2000 Tuesday, causing computer systems to crash across the United States and reportedly as far away as Germany and Asia.
A German teenager confessed to creating last year's Sasser worm -- which wreaked havoc on hundreds of thousands of computers -- as he went on trial on charges including computer sabotage, a court official said.
It's the oldest trick in the virus writer's handbook.
Researchers have identified a new computer virus that masquerades as news headlines from CNN's Web site.
BETTER, FASTER, smaller, cheaper ... It's the standard progression in the world of personal tech- nology. Many of the new gizmos and gadgets of 2004 were clever and useful, but a few deserve specia...
Grinch-like virus writers are spreading their version of holiday cheer by embedding a variant of the so-called "Zafi" e-mail worm inside electronic greetings.
Anti-virus software maker McAfee Inc. is warning about a new version of the Mydoom worm that infects computers of people who click on a link in e-mail they receive.
NOBODY IN CHARGE AT MICROSOFT IS LIKELY to forget the dog days of August 2003. That month viruses and worms aimed at flaws in Windows software brought the Internet to its knees. Hard drives flooded...
Besides slowing down your computer and subjecting you to annoying pop-ups, worm and virus attacks can do serious harm.
Computer prices are so low, just about everyone can afford one. The expensive part is stocking the computer with software.
Internet researchers were scratching their heads over an attack that targeted some of the most popular sites on the Web with a trojan virus that exploits flaws in Microsoft's Internet Explorer Web browser.
The fast-spreading computer worm Sasser has wreaked more havoc on computer users worldwide, affecting several businesses, banks and government offices, including Britain's Coastguard.
Don't you wish virus writers would discover girls and beer? Life would be better, for them and us. Unfortunately, they take out their adolescent urges in cyberspace, and the rest of us have to suffer.
Computer security experts are dealing with at least four variants of a worm that is spreading quickly through Windows operating systems.
Maybe e-mails should start to come with a Surgeon General's warning:
Microsoft became the latest company to offer a reward for information leading to the arrest and conviction of the creator of the MyDoom virus -- an e-mail worm that is expected to cost companies up to $250 million in lost productivity and technical support expenses.
Another day, another e-mail worm. But unlike the creators of past worms, it looks like the writers of the latest one, known as MyDoom, are not going after Bill Gates and his fellow merry knights of Windows.
A sneaky e-mail worm continued to clog Internet traffic Tuesday, spreading faster than previous Web bugs by appearing as an innocuous error message.
Hackers unleashed an agile worm Monday -- using a sneaky, fairly new tactic to get unsuspecting computer users to diffuse their malicious code.
Somewhere in the inner circle of hell where virus writers and spammers maintain their offices, a young entrepreneur is crafting a marketing campaign for pills that will shrink your penis and enlarg...
Pessimism can seem a virtue after this year's technology calamities--from the Great Northeastern Blackout to the plague of nasty computer worms. If you convince yourself that terrible things are go...
We are entering the plague years for computer viruses. There are more viruses appearing than ever before, and unlike earlier versions, which were mainly annoying, these new ones are increasingly mo...
Computer viruses, those digital scourges, are infecting America's PCs faster than chicken pox moves through a kindergarten. The number of known computer viruses trebled to about 6,000 over the past...