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Anyone who has spent any amount of time trying to secure their organization’s endpoints or network would not be surprised to learn that phishing is now the #1 delivery vehicle for malware and ransomware.
According to Mandiant, phishing was used in about 95 percent of the cases of successful breaches where an attacker has been able to get into a target network and do something malicious. A phishing campaign is likely to have a 90 percent success rate—i.e., someone takes the bait—when the campaign is sent to 10 or more people.
Source: NW Security 1