Posts in "Mobile security"

Fake WhatsApp… and the Real Malware zLabs Discovered

On November 3, 2017, some users of Reddit noticed two WhatsApp applications with the same developer name “WhatsApp Inc.” and started to investigate what looked like a fake update for the WhatsApp application. They quickly realized that the application has been downloaded more than one million times. As a part of Zimperium’s zLabs research team, … Read More

Detecting KRACK Man in the Middle Attacks

What is KRACK? KRACK (Key Reinstallation attaCKs, KRACKs) is a serious weakness in the WPA2 protocol. WPA2 secures all modern protected Wi-Fi networks including those used by smartphones. Attackers within physical range of a Wi-Fi network can exploit protocol weaknesses by using key reinstallation attacks. The attack works against all modern protected Wi-Fi networks and … Read More

Validating Machine Learning Detection of Mobile Malware with Zimperium’s z9

Zimperium’s core machine learning engine, z9, has a proven track record of detecting zero-day exploits. We recently announced an extension of the framework that detects previously unknown mobile malware. This extension is known as “z9 for Mobile Malware”, and was officially announced in September 2017. Internally, the code name has been “Cogito”, so this research … Read More

Fake Snapchat in Google Play Store

Zimperium discovered and reported a fake version of the popular Snapchat app in the official Google Play Store; At the time of our discovery, it was the second result when searching for “Snapchat”. The fake version of Snapchat app is using “Snap Inc .” as Company Name, with a  ” .” appended to original name. … Read More

ZPI: One approach to rule them all

In 1975, a book was published that changed the way we approach complex problems. Inspired on how nature works “Adaptation in Natural and Artificial Systems” set the bases of genetic algorithms. The release date of this blogpost is strongly linked to that book, it is a symbolic tribute to its author, John Henry Holland, who … Read More