Google combined its 4 main security problems into what they called “Quadrooter.” When the Quadrooter affected over 900 million Android users, Google was prompted to take action. Here are the two security problems Google recently fixed with their update:

The first vulnerability is similar to the stagefright epidemic

Stagefright is a group of software viruses that enable an attacker to execute arbitrary operations on the victim’s phone via remote code execution. Some of these codes included jpegs and other formats that can be emailed. Similarly, this security breach would send jpeg images through Gmail and Google Talk that, unfortunately, would expose victims to viruses without ever having to click on anything — the malicious code would manifest itself through the jpeg’s data.

Read More: Here’s What We Know About Who Hacked Yahoo

The second vulnerability was exposed by someone on Google’s Project Zero security team

It was deemed an “extremely dangerous bug” by the Google research team because it allowed hackers to initiate malware on vulnerable devices in a variety of ways. A spokesperson from Google explained that this exploit was utilized for research purposes, and it only affected a select number of phones. However, because of the dangers it posed, the breach needed to be addressed.

Having Security Issues of your own?

Download DFNDR. This free app ensures that your device runs at an optimal speed with maximum security. There are several useful features encompassed under DFNDR. For instance, the AV Scan will check for threats on your smartphone including all files and programs that are in your device’s memory and SD card.

Moreover, the Applock is an unbeatable app-lock and Private Gallery to protect your privacy. Lock your Facebook, texts, contacts, images and other apps with a second password, even if the device itself is unlocked.