Targeted attacks launched via a compromised account were the most successful email attack vector in the past 12 months according to new research. The study carried out for email security company Agari by Osterman Research reveals that 44 percent of organizations have been victims of a successful ATO-based attack. Agari identifies five steps to ATO-based attacks, including account access, control, reconnaissance, targeted attacks and data exfiltration or fraudulent financial payments. The attacks come from four types of senders: strangers, employee webmail accounts, trusted third parties and insider business accounts. While strangers accounts send 90 percent of ATO-based attacks, trusted third…
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