Mobile security
As smartphones are a permanent point of access to the internet (mostly on), they can be compromised as easily as computers with malware. A malware is a computer program that aims to harm the system in which it resides. Trojans, worms and viruses are all considered malware. A Trojan is a program that is on the smartphone and allows external users to connect discreetly. A worm is a program that reproduces on multiple computers across a network. A virus is malicious software designed to spread to other computers by inserting itself into legitimate programs and running programs in parallel. However, it must be said that the malware are far less numerous and important to smartphones as they are to computers.
Sality
Sality’s downloader mechanism downloads and executes additional malware as listed in the URLs received using the peer-to-peer component. The distributed malware may share the same “code signature” as the Sality payload, which may provide attribution to one group and/or that they share a large portion of the code. The additional malware typically communicates with and reports to central command and control (C&C) servers located throughout the world. According to Symantec, the "combination of file infection mechanism and the fully decentralized peer-to-peer network [...] make Sality one of the most effective and resilient malware in today's threat landscape."