Why you should take hacked sites’ password assurances with a grain of salt

Eric Bangeman

Reputation.com, a service that helps people and companies manage negative search results, has suffered a security breach that has exposed user names, e-mail and physical addresses, and in some cases, password data.

In an e-mail sent to users on Tuesday, officials with the Redwood City, California-based company said the passwords were "highly encrypted ('salted' and 'hashed')," a highly vague description that can mean different things to different people. "Although it was highly unlikely that these passwords could ever be decrypted, we immediately changed the password of every user to prevent any possible unauthorized account access," the e-mail added unconvincingly.

It's unfortunate that companies make such assurances, because they may give users a false sense of security. As Ars has been reporting for nine months, gains in cracking techniques means the average password has never been weaker, allowing attackers to decipher even long passwords with numbers, letters, and symbols in them. Even Ars' own Nate Anderson—a self-described newbie to password cracking—was able to crack more than 45 percent of a 17,000-hash list using software and dictionaries he downloaded online.

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