If you noticed something odd on Twitter tonight, you weren't alone. Around 1AM ET, accounts like @PlayStation, @Viacom, @XboxSupport, @NTSB, @TheNewYorker, @TheNextWeb, the Red Cross (@ICRC) and @Money started aggressively pushing ways to help you obtain more followers for free. Most of the tweets have been scrubbed, however, a look at Tweetdeck revealed they were all posted via Twitter Counter (@thecounter).
It's unclear exactly what happened, however, reached by email, Boris Veldhuijzen van Zanten said the company is looking into the situation. According to its website, Twitter Counter "provides statistics of Twitter usage and tracks over 14 million users...and sells featured spots on its website to people who want to gain more followers." If it was hacked, the problem only appears to have hit accounts linked to the tool, so your account is probably safe. Still, as always, now is a good time to reset your password, and double check any apps or services linked to your social media accounts -- if they get compromised, you do too.
Source: PlayStation (Twitter)