A malicious Outlook add-in named "AgreeTo" was hijacked by attackers who claimed its expired domain to serve fake login pages, stealing over 4,000 credentials .
While "440k Outlook.com Domain HQ base.txt" is a specific historical file, recent threats targeting Outlook users include: 440k Outlook.com Domain HQ base.txt
Approximately 440,000 records of email and password combinations. A malicious Outlook add-in named "AgreeTo" was hijacked