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Use a trusted, updated antivirus to run a "Full System Scan."

Attackers use specific tactics in this subject line to bypass your natural skepticism:

Below is a helpful guide (a "white paper" style summary) on how to handle this specific threat. Security Brief: Identifying "Large File" Email Threats 1. The Anatomy of the Hook download/view now ( 156.07 MB )

Turn off your Wi-Fi or unplug your ethernet cable immediately to stop the malware from "calling home" to a command server.

Hover your mouse over the sender’s name. If the email address is a string of random characters or doesn't match the company it claims to be from, delete it. Use a trusted, updated antivirus to run a "Full System Scan

If you think it might be real, contact the supposed sender via a fresh email or phone call—never reply to the suspicious message. 4. What to do if you already clicked

The phrase "now" pressures you to act before thinking. Hover your mouse over the sender’s name

From a different device, change your primary email and banking passwords.