Music site Last.fm has become the latest high-profile victim of a spate of security breaches that may have compromised millions of user accounts.
Just one day after business networking service LinkedIn and dating site eHarmony admitted to breaches, music-sharing service Last.fm warned its users over the possible risk to their accounts following the loss of passwords.
Last.fm has not indicated how many of its accounts were implicated.
"We are currently investigating the leak of some Last.fm user passwords. This follows recent password leaks on other sites, as well as information posted online," the company said.
"As a precautionary measure, we’re asking all our users to change their passwords immediately."
Earlier in the day, eHarmony warned users that "a small fraction" of its accounts could be compromised.
The site will directly contact users to provide information on setting new passwords. eHarmony is recommending that all users adhere to best practices including the use of strong passwords and regularly changing their passwords.
Earlier this week, LinkedIn released information on a massive breach of its own customer data. Researchers have estimated that more than 6.5 million user accounts have been put at risk and all users have been advised to change their passwords on the service to strong, unique codes.
Terence Spies, chief technology officer for Voltage security, told V3 that the incidents should encourage firms to tighten security on the handling of password hashes and other commonly-overlooked components.
"Security is the one piece of software engineering that you can never demo, it can be difficult to convince people to invest in it," Spies explained.
"It always pays to give attention to security even if it does not lead to revenue producing features on your site."
Spies said that users can help to prevent the loss of accounts by using strong passwords which are unlikely to be compromised in 'brute force' password guessing attacks. Additionally, users should maintain unique passwords for each site they visit.
"There is an amazing number of people that choose to do use the same password on every site," he said.
"By doing that you are essentially lowering it to the lowest common denominator."
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