Guardians of Trust: Countering Email Spoofing for Brand Reputation

Wilson Chua
3 min readAug 15, 2023

In the world of cyber warfare, a battle is being fought beneath the surface of our digital interactions. Behind the curtains of legitimate emails lies a shadowy tactic known as email domain spoofing, where the unscrupulous seek to fool the unsuspecting. A recent revelation involving the domain and a seemingly improbable culprit, Microsoft, sheds light on the power of active email domain monitoring and cooperative efforts to expose the truth.

The Web of Deceit Unveiled, a staunch defender against cyber threats, found itself at the center of a convoluted plot of deception. In a seemingly bizarre twist, several IP addresses were traced back to Microsoft. These were caught in the act of attempting to spoof the reputable cybersecurity domain. Spoofing - a technique where a sender masquerades as a trustworthy source to manipulate recipients, is like modern-day identity theft — only this time, the its not against a person, but applies to an entire company brand/reputation.

Telstra and Watchdog: Allies in Unveiling Deception

The narrative takes an unexpected turn as Telstra, a prominent telecommunications organization in Australia, emerged as a staunch ally in this fight against deception. With a commitment to cybersecurity and trust, Telstra actively collaborated with This meant that Telstra reported back a list of IPs that were seen attempting to assume the identity of WatchDog. This groundbreaking initiative involves the identifying the IP addresses involved in failed spoofing attempts.

The Power of Active Email Domain Monitoring

The suspicious emails emanated from an IP address that, to everyone’s surprise, was linked to Microsoft, a titan in the technology world. This discovery highlighted the subtle nuances of email domain spoofing, where even the most trusted names can be exploited for malicious purposes.

A Triumph for Transparency

Thanks to the proactive efforts of Telstra and, the veil of deception was lifted, exposing the culprits behind the spoofed emails. The collaboration between these entities serves as a testament to the power of unity against cyber threats. By sharing insights and audit trails, they unraveled a sophisticated scheme and reaffirmed the importance of robust cybersecurity practices.

Phishing’s Venomous Sting: A Closer Look

The incident with and Microsoft exemplifies the sinister potential of spoofed emails in phishing campaigns. Imagine receiving an email that appears to be from a trusted source, prompting you to click on a seemingly legitimate link. Unbeknownst to you, that link directs you to a malicious website designed to steal your sensitive information, such as login credentials, credit card numbers, or even personal identification.

Code Execution: The Gateway to Compromise

In even more treacherous scenarios, clicking on a link within a spoofed email could lead to the execution of malicious code (Phishing attempt using spoofed emails). This code can infiltrate your system, giving hackers unauthorized access to your network. Once inside, these cybercriminals can maneuver with impunity, potentially extracting confidential files, spreading malware, or launching further attacks on other unsuspecting recipients within your contacts.

The Call to Vigilance and Collaboration

The saga of and Microsoft serves as a sobering reminder of the lengths to which cybercriminals will go to deceive and infiltrate. Vigilance is our strongest weapon against such threats. By staying informed, questioning the authenticity of unexpected emails, and collaborating as a collective front, we can mitigate the risks posed by email domain spoofing and phishing.

In fact, Microsoft isn’t the only source of spoofed emails, in just one day alone, Watchdog saw attempts reportedly attempting to spoof their emails:

Spoofing attempts reported to Watchdog for a single day

In a world where illusion and reality blur in the digital age, stories like this remind us of the paramount importance of transparency and unity. By standing together, we can unmask deception, ensuring that our online interactions remain a safe haven of trust and authenticity.