Warning! Yahoo cautions users of more hacking attacks, here’s why every e-mail user should worry

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Published: February 16, 2017 6:52:46 PM

Yahoo, which has recently faced a lot of issues regarding cyber security, has once again warned of potentially harmful attacks on user accounts. This comes just two months after Yahoo disclosed that more than a billion user accounts were compromised in 2013, which was perhaps the biggest ever cyber security breach in terms of volume.

Yahoo hack, yahoo attach, yahoo cyber attack, yahoo verizon, verizon yahoo, yahoo email, yahoo hackers, yahoo cookies, email cookies, yahoo forged cookies, yahoo cyber security, yahoo newsThough Yahoo has not names any country behind this act, but many security experts in the US believe China or Russia to be behind it. If the analysis or rumours are true, it also exposed other email service providers at risk, which increases the need for more pro-activity from the providers while users should be more careful. (Reuters)

Yahoo, which has recently faced a lot of issues regarding cyber security, has once again warned of potentially harmful attacks on user accounts. This comes just two months after Yahoo disclosed that more than a billion user accounts were compromised in 2013, which was perhaps the biggest ever cyber security breach in terms of volume. At that time, this was twice the amount of accounts which Yahoo had earlier disclosed in September 2016, about a hack in 2014. Yahoo had blamed it on state-sponsored attacks. Interestingly, after the disclosures, Verizon, which recently bought Yahoo has reportedly revised the $4.83 billion deal, decreasing it by $250 to $350 million. This is said to compensate for the economic damages due to the hacking attacks.

According to the new disclosure, Yahoo believes that the hackers might have forged cookies and the hacks are linked to the same state-sponsored attacks. Though Yahoo has not names any country behind this act, but many security experts in the US believe China or Russia to be behind it. If the analysis or rumours are true, it also exposed other email service providers at risk, which increases the need for more pro-activity from the providers while users should be more careful. Yahoo has not revealed how many user accounts were compromised this time, but according to the announcement, hackers forged cookies in an away that they did not have to enter the password.

Also read | Yahoo hack: Are you among the billion users whose accounts got compromised? Here’s what you can do

Yahoo had reportedly outlined the issue in December 2016 but is only notifying specific ‘potentially affected’ users now. Meanwhile, Yahoo has reportedly nulled the forged cookies which mean they cannot be used again.

Also read | From Russian hacking to Yahoo server breach, here are the worst 5 hacks that defined the tech world in 2016

Yahoo with the help of outside cyber forensic experts had found that the data of users was compromised but it has still not been able to trace the intrusion source. Yahoo said that the investigations are on. In a statement, Yahoo said, “Yahoo believes an unauthorised third party, in August 2013, stole data associated with more than one billion user accounts.” A blog post by Yahoo’s chief security officer Bob Lord says that some of the attacks were done by hackers who got hold of user accounts without using a password and instead relied on ‘forged cookies’ or data files.

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