Guides
What unusual DKIM canonicalization types reveal about a mail systemDKIM is one of those email authentication protocols that sits quietly in the background, signing messages so receiving servers can verify they have not been…Verifying an email sender's domain against typosquatting variantsInboxes across Sydney, Melbourne and Brisbane stay full of messages pretending to come from well-known organisations. The Australian Cyber Security Centre…How Phishing Groups Exploit Domains With Prior Good ReputationPhishing operations have grown more methodical, with criminal networks treating domain acquisition as a strategic investment rather than a throwaway activity.…Building a Response Playbook for a Sudden Domain Trust DropDomain reputation used to live quietly in email infrastructure. For Australian organisations sending from .au namespaces, a sharp drop can surface within hours…When DMARC and SPF alignment conflict: what receivers noticeEmail authentication has become a layered puzzle for many senders, especially when protocols like SPF and DMARC are configured without a clear strategy. A…Finding SPF-Active Domains That Still Lack DKIM Through Bulk ChecksEmail authentication is one of those quiet back-office tasks that Australian IT teams keep pushing down the to-do list until something goes wrong. A bulk…Why Domain Trust Scores Matter in User-Submitted Phishing ReportsEvery week, inboxes from Brisbane boardrooms to Perth home offices are flooded with suspicious emails. Staff dutifully forward dodgy messages to IT, hoping the…-migration email security audit for domains you're acquiringWhen an Australian business absorbs another company or picks up a portfolio of legacy domains, the excitement of growth can quickly give way to unwelcome…What a Flood of DMARC Reports Reveals About Your InfrastructureDMARC reports arrive like weather forecasts for your sending domain, yet many teams across Sydney and Melbourne treat them as background noise. When a single…Detecting forged emails that pass DKIM via a stolen subdomain keyEmail authentication has long given organisations a false sense of safety. A message showing a green DKIM signature looks legitimate, the cryptographic seal…