200 million users of Yahoo Japan are advised to change their passwords, after hackers allegedly accessed a database of 22 million Yahoo Japan email addresses.
Marissa Mayer, CEO of Yahoo, says that she doesn’t have a passcode on her smartphone.
A security firm wins a paltry $12 Yahoo t-shirt as a reward, after reporting a vulnerability to Yahoo that could have allowed a hacker to hijack any Yahoo user’s account.
Hackers break into Yahoo’s systems and steal over 500 million users’ credentials, including names, email addresses, telephone numbers, dates of birth, hashed passwords and security questions and answers. The hack is not discovered by Yahoo for almost two years.
Alex Stamos, a respected member of the computer security industry, quits his job as head of security at Yahoo to join Facebook.
According to some sources, Stamos left Yahoo after the company did not consult with the security team before giving in to a US government request to scan every incoming email with snooping code that itself could have been exploited by a hacker.
US Congress blocks all emails coming from Yahoo, after being hit by a wave of ransomware attacks from compromised Yahoo accounts.
Telecoms giant Verizon announces it is acquiring Yahoo for almost $5 billion in cash.
A hacker offers for sale on the dark web what he claims are 200 million stolen Yahoo credentials. Yahoo begins to investigate whether it might have suffered a data breach.
Yahoo confirms it suffered a massive hack in 2014 that saw attackers steal details of 500 million accounts. The hack also impacts users of BT Yahoo, Sky and other services.
Yahoo users are advised to change their passwords, if they have not changed them since late 2014.
Yahoo claims the attack was “state-sponsored”, although some observers pour cold water on the theory.
It is revealed that Yahoo rejected the option of resetting users’ passwords two years ago as a site-wide security measure.
Yahoo is sued for the 2014 hack.
Yahoo is accused of making it harder for users to leave the service, after taking away the option of auto-forwarding email to external accounts.
Verizon says that the hack could impact its acquisition of Yahoo.