Most malicious documents (macros) are tiny. However, "bloating" a file to over 100 MB is a known technique called .
Use a trusted, updated antivirus to run a "Full System Scan."
Attackers use specific tactics in this subject line to bypass your natural skepticism: download/view now ( 156.07 MB )
It doesn't say what the file is (e.g., "Invoice" or "Contract"), which triggers curiosity.
From a different device, change your primary email and banking passwords. Most malicious documents (macros) are tiny
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.
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 From a different device, change your primary email
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