Source: KasperskyRoman Dedenok 
To be ready for attacks targeting your company, information security officers need to know about received spear-phishing e-mails.

Virtually every employee of a large company comes across the occasional e-mail aiming to steal their corporate credentials. It’s usually in the form of mass phishing, an attack in which e-mails are sent out at random in the hope that at least some recipients will take the bait. However, the stream of phishing e-mails may contain one or two more dangerous, targeted messages, the content of which has been customized for employees of specific companies. This is spear-phishing.

Spear-phishing messages represent a clear sign that cybercriminals are interested in your company, specifically, and it may not be the only attack in play. That is a major reason infosec officers need to know if any employee has received a spear-phishing e-mail — they need to prepare countermeasures and alert personnel in good time.

That’s why we advise IT to check filtered e-mails periodically in search of spear-phishing, and to teach other employees how to spot signs of targeted phishing. What follows are a few of the most common tricks, with examples from some fresh spear-phishing campaigns.