**4.2 Denial of service attacks/malware injection**

The basic framework of cloud which offers scalability and speed also becomes nurturing ground for delivering super scalable malware. Cloud applications themselves are great weapon for spreading the malicious attacks on a large scale to cause greater harm like hijacking accounts, breaching data. Malware injections are basically code scripts which are embedded into the basic cloud service modules thus run as legitimate instance having access to all the sensitive resources and thus intruder can eavesdrop, compromise the overall integrity of vital information. Denial of Service attack (DoS) makes valuable services unavailable to the legitimate user thus hamper the overall performance and security. DoS may act as catalyst and used as smokescreen to hide the malicious activities bypassing the firewall of cloud and thus can spread easily to cause greater harm instead of infecting one device.
