Emails
Chrome extension
Google Dork
intext:"@domain.com"
intext:"@example.com" site:linkedin.com
Find email adresses
Mail is used on different sites like twitter, etc.
Social MediaOpsec / Anonymity
OpSec / AnonymityEmail Spoofing
Check SPF, DKIM, DMARC
# dig TXT _dmarc.domain.com
; <<>> DiG 9.18.24-1-Debian <<>> TXT _dmarc.domain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 7149
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;_dmarc.domain.com. IN TXT
;; AUTHORITY SECTION:
domain.com. 60 IN SOA dns112.blah.net. tech.blah.net. 2024102800 86400 3600 3600000 60
;; Query time: 63 msec
;; SERVER: 127.0.0.53#53(127.0.0.53) (UDP)
;; WHEN: Mon Nov 18 23:41:06 EST 2024
;; MSG SIZE rcvd: 104
ANSWER: 0 -> DMARC not configured
Strict DMARC policy (such as “p=reject”) is not defined.
./spoofy.py -d domain.com
MailSecOps


Online Tool - Spoof Mail
DMARC-SPF-Checker
With Gophish


With Social-Engineer Toolkit
In this example, we use brevo as a smtp relay server. The mail received will be of the form username_spoofed@
smtp_relay_domain
rather than username_spoofed@domain_spoofed
, as brevo modifies the domain name for security reasons.
https://www.youtube.com/watch?v=lR_Ck3-_AGQ







Email Security Checklist
Resources
Open Relay
SMTP (25, 465)Google Account - GHunt
Extract email from commit history in GitHub repos
Interesting Books
Interesting BooksOpen Source Intelligence Techniques Learn how to gather data using OSINT tools and strategies.
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