Adobe

In 2012, Adobe said that it was investigating on how usernames, email addresses and encrypted passwords were stolen from a company’s database after one Egyptian hacker known as Virus_HimA poster 230 of them on Pastebin. It also revealed that about 38 million usernames and encrypted passwords of customers had been stolen in a cyber attack and it also told that the attackers had decrypted the credit-card system using Adobe’s own internal systems. Many of Adobe’s application source code also had been stolen.

Yahoo!

In 2012, Yahoo was forced to change its Axis extension for Google Chrome because of the security flaw that it had done.  What Yahoo did was it accidently leaked its private security key that could allow anyone to create malicious plug-ins and Google chrome would identify them as official plug-ins by Yahoo. There was another incidentthat happened with Yahoo in which about 450,000 unencrypted usernames and passwords were stolen.  

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