Under Armour Inc., joining a growing list of corporate victims of hacker attacks, said about 150 million user accounts tied to its MyFitnessPal nutrition-tracking app were breached earlier this year. An unauthorized party stole data from the accounts in late February, Under Armour said on Thursday. It became aware of the breach earlier this week and took steps to alert users about the incident, the company said.

The Trump administration on Thursday blamed the Russian government for a campaign of cyber attacks stretching back at least two years that targeted the U.S. power grid, marking the first time the United States has publicly accused Moscow of hacking into American energy infrastructure.

A Russian national who was extradited to the U.S. last year over Kremlin objections pleaded guilty in a Virginia federal courtroom Monday to conspiracy and aiding and abetting computer intrusion, admitting he operated a dark web service that helped thousands of hackers conceal malware from detection.

Just imagine $5,500 times 143 million, and you'll see why this could be big trouble.

If you think being a Girl Scout is all camping, crafting, and cooking, think again. For the first time, millions of Girl Scouts nationwide are taking on hacking and cybercrime as they work towards earning newly introduced cybersecurity badges. Girl Scouts of the USA teamed up with security company Palo Alto Networks to devise a curriculum that educates young girls about the basics of computer networks, cyber attacks, and online safety.

Marcus Hutchins single-handedly stopped one of the most dangerous cyberattacks ever. Then the FBI arrested him.

Reality Winner grew up in a carefully kept manufactured home on the edge of a cattle farm 100 miles north of the Mexican border in a majority-Latino town where her mother, Billie, still lives. From the back porch, a carpet of green meets the horizon, and when a neighbor shoots a gun for target practice, a half-dozen local dogs run under the trailer to hide. Billie worked for Child Protective Services, and in Ricardo, Texas, the steady income made her daughters feel well-off; the fact that they had a dishwasher seemed evidence of elevated social standing.

Cryptocurrencies have been on a wild ride. The premier digital currency, Bitcoin, crossed $17,000 in value Thursday before plunging back to $14,000. Others like it are gaining in popularity as prices climb to meteoric heights. While these new digital currencies are helping some pioneering investors gain quick wealth, federal authorities are warning about their potential for fraud.

Former Yahoo Chief Executive Marissa Mayer apologized on Wednesday for two massive data breaches at the internet company, blaming Russian agents for at least one of them, at a hearing on the growing number of cyber attacks on major U.S. companies.

Months before its catastrophic data breach, a security researcher warned Equifax that it was vulnerable to the kind of attack that later compromised the personal data of more than 145 million Americans, Motherboard has learned. Six months after the researcher first notified the company about the vulnerability, Equifax patched it—but only after the massive breach that made headlines had already taken place, according to Equifax's own timeline.

Canada's electronic spy agency says it is taking the "unprecedented step" of releasing one of its own cyber defence tools to the public, in a bid to help companies and organizations better defend their computers and networks against malicious threats.

When North Korean hackers tried to steal $1 billion from the New York Federal Reserve last year, only a spelling error stopped them. They were digitally looting an account of the Bangladesh Central Bank, when bankers grew suspicious about a withdrawal request that had misspelled “foundation” as “fandation.” Even so, Kim Jong-un’s minions still got away with $81 million in that heist.

The company is sending out password reset emails to users whose passwords were exposed.

The intruders broke in and then handed off to a more sophisticated team of hackers, the hallmarks of a state-sponsored operation.

Equifax has finally revealed how many Canadians were caught up in its massive hack: 100,000. The credit reporting agency said Tuesday that data compromised in the attack includes names, addresses, social insurance numbers and credit card details. Equifax cautioned in a statement posted on its website that its investigation is ongoing and "this information may change."

The credit report provider Equifax has been accused of a fresh data security breach, this time affecting its Argentine operations. Cyber-crime blogger Brian Krebs said that an online employee tool used in the country could be accessed by typing "admin" as both a login and password. He added that this gave access to records that included thousands of customers' national identity numbers.

We recommend that anyone with a credit history assume they were affected by the hack, as Equifax's hack-checker tool proved unreliable in our tests. Also, Equifax will suggest you enroll in Trusted ID, which includes a Terms of Service agreement that waives your rights to a class-action lawsuit against the company. CNET is investigating the issue and is not yet sure if these terms will hold up in court.

A huge spambot ensnaring 711 million email accounts has been uncovered. A Paris-based security researcher, who goes by the pseudonymous handle Benkow, discovered an open and accessible web server hosted in the Netherlands, which stores dozens of text files containing a huge batch of email addresses, passwords, and email servers used to send spam.

A senior US official has admitted to being the source behind a claim that the FCC was “hacked” in 2014 during the net neutrality debate. Internally, however, the agency’s security team had assessed there was no evidence of a malicious intrusion.

Marcus Hutchins, AKA MalwareTech, previously registered a specific domain included in the ransomware’s code, which stopped the malware from spreading.