Twitter says hackers compromise 250K accounts
One expert said that the Twitter hack probably happened after an employee's home or work computer was compromised through vulnerabilities in Java, a commonly used computing language whose weaknesses have been well publicized.
Ashkan Soltani, an independent privacy and security researcher, said such a move would give attackers "a toehold" in Twitter's internal network, potentially allowing them either to sniff out user information as it traveled across the company's system or break into specific areas, such as the authentication servers that process users' passwords.
In a telephone interview Friday, Soltani said that the relatively small number of users affected suggested either that attackers weren't on the network long or that they were only able to compromise a subset of the company's servers.
Twitter is generally used to broadcast messages to the public, so the hacking might not immediately have yielded any important secrets. But the stolen credentials could be used to eavesdrop on private messages or track which Internet address a user is posting from.
That might be useful, for example, for an authoritarian regime trying to keep tabs on a journalist's movements.
"More realistically, someone could use that as an entry point into another service," Soltani said, noting that since few people bother using different passwords for different services, a password stolen from Twitter might be just as handy for reading a journalist's emails.
AP reporters Raphael Satter in London and Didi Tang in Beijing contributed to this report.
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