Ne’er-do-wells have long abused a feature in Skype to glean the Internet address of other users. Indeed, many shady online services that can be hired to launch attacks aimed at knocking users offline bundle so-called “Skype resolvers” that let customers find a target’s last known location online. At long last, Microsoft says its latest version of Skype will hide user Internet addresses by default.
“Starting with this update to Skype and moving forward, your IP address will be kept hidden from Skype users,” Microsoft’s Skype team wrote in a blog post about the latest version, v. 18.104.22.168 for most users. “This measure will help prevent individuals from obtaining a Skype ID and resolving to an IP address.”
Typically, these Skype resolvers are offered in tandem with “booter” or “stresser” services, online attack tools-for-hire than can be rented to launch denial-of-service attacks (most often against online gamers). The idea being that if you want to knock someone offline but you don’t know their Internet address, you can simply search on Skype to see if they have an account, and then use the resolvers to locate their IP. Thus far, the resolvers have worked regardless of any privacy settings the target user may have selected within the Skype program’s configuration panel. Continue reading →