Sources

• Spam Resource spamresource.com
• Word to the Wise wordtothewise.com
• Spamhaus spamhaus.org
• Google Search Central feeds.feedburner.com
• NetBeacon netbeacon.org
• dmarc.org dmarc.org
• Cloudflare — email security blog.cloudflare.com
• Cisco Talos blog.talosintelligence.com
• APNIC blog blog.apnic.net
• RIPE Labs labs.ripe.net
• Krebs on Security krebsonsecurity.com
• Validity validity.com
• Media Bias/Fact Check mediabiasfactcheck.com
• European Newsroom europeannewsroom.com
• reputation.house reputation.house