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Snapchat’s response to breach stirs criticism

The Snapchat logo at the company’s headquarters. About 20 million adults are said to use the service.Kevork Djansezian/Getty Images

NEW YORK — Snapchat, the disappearing-message service popular with young people, has been quiet following a security breach that allowed hackers to collect the usernames and phone numbers of millions of its users.

Company spokeswoman Mary Ritti said Thursday morning that the company is assessing the situation, but did not have further comment.

As Americans rang in the New Year, hackers reportedly published 4.6 million Snapchat usernames and phone numbers on a website called snapchatdb.info, which has since been suspended. The breach came less than a week after security specialists alerted Snapchat of a vulnerability in its system and warned that an attack could take place.


In response to the warning, Snapchat said in a blog post last Friday that it had implemented ‘‘various safeguards’’ over the past year that would make it more difficult to steal large sets of phone numbers. But the measures appear to have fallen short.

The incident bruises the image of a young company that reportedly turned down a $3 billion buyout offer from Facebook last year.

According to the Pew Research Center’s Internet & American Life Project, 9 percent of US cellphone owners use Snapchat, which amounts to roughly 20 million adults, based on 2012 Census data. The Pew study didn’t include users under 18, a demographic with which Snapchat is especially popular. The Los Angeles-based company, which has no source of revenue, has not disclosed its own user figures.

What should users do? Gibson Security, the firm that warned Snapchat of the security vulnerability on Dec. 25, has created a site — lookup.gibsonsec.org — that lets users type in their username to see if their phone number was among those leaked. Of two user accounts The Associated Press checked, one was found to have been compromised.

Gibson Security did not publish the last two digits of the phone numbers.


Gibson said users can delete their Snapchat account if they wish, but ‘‘this won’t remove your phone number from the already circulating leaked database.’’ Users can also ask their phone company to give them a new number.

‘‘Lastly, ensure that your security settings are up to scratch on your social media profiles. Be careful about what data you give away to sites when you sign up — if you don’t think a service requires your phone number, don’t give it to them,’’ Gibson said.

This was Gibson’s second warning to Snapchat, following one in August the security firm said was ignored.

‘‘Given that it’s been around four months since our last Snapchat release, we figured we’d do a refresher on the latest version, and see which of the released exploits had been fixed (full disclosure: none of them),’’ Gibson wrote on its website.

The Snapchat breach comes just two weeks after Target was hit with a massive data security breach that affected up to 40 million debit and credit card holders.

Gartner security analyst Avivah Litan said phone numbers are not considered ‘‘sensitive’’ personally identifiable information — such as credit card or Social Security numbers — so they are collected by all sorts of companies to verify a person’s identity.

Regarding Snapchat’s response to the warnings Litan said that it ‘‘doesn’t seem that responsible to be so nonchalant about it.’’

Many people use Snapchat because it feels more private than other messaging apps and social networks. Users can send each other photos and videos that disappear within a few seconds after they are viewed.