The number of threat actors leveraging legitimate cloud services in their attacks has grown this year as attackers have begun to realize their potential to provide low-key and low-cost infrastructure.
Traffic to and from well known, trusted services such as Microsoft OneDrive or Google Drive may be less likely to raise red flags than communications with attacker-controlled infrastructure. In the past few weeks alone, Symantec’s Threat Hunter Team has identified three further espionage operations using cloud services and found evidence of further tools in development.
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Source: Symantec
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