OREANDA-NEWS. May 11, 2016. Android devices are under siege by yet another breed of malware.

Dubbed Viking Horde, the new malware has waged war by infecting certain apps at the Google Play store, researchers at Check Point said Monday. Affected apps include Viking Jump, Parrot Copter, Memory Booster, Simple 2048 and WiFi Plus.

Google did not immediately respond to a request for comment.

Android phones and tablets on which the infected apps are installed become part of a botnet, a network of devices controlled by hackers to perform certain tasks without the knowledge of the devices' owners. Viking Horde can perform ad fraud, a way of getting people to click ad links that generate money for the hackers. Check Point said the new malware can also send spam and carry out Distributed Denial of Service attacks, which shut down websites by bombarding their servers with data requests.

Google's Android software has been highly vulnerable to malware, both because of its open nature and the popularity of Android phones. In recent years, Google has stepped up its efforts to catch malicious programs before they reach its app store. But the process still is flawed, especially compared with Apple's more intense scrutiny of apps designed for iOS users.