Bluebox Security CTO Jeff Forristal warned that the bug is not to be downplayed, especially since a majority of Android users disable security features that defend against malicious app installs.
The weakness in SIM cards could allow an attacker to download malicious software onto a victim's SIM card, access data and operate it as the normal owner would.
A researcher has learned that BlackBerry 10 users are having their email credentials sent to a server belonging to the mobile manufacturer. But Research in Motion (RIM) denies this.