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4 Tips to Combat the Latest Phishing Threat – SubdoMailing

Navigating the Dangers of SubdoMailing
A New Phishing Menace

In today’s digital age, where the majority of our professional and personal lives intertwine with the internet, a new phishing threat has emerged, casting shadows of concern across our daily routines. This threat, known as “SubdoMailing,” has quickly gained notoriety for its cunning ability to masquerade as trustworthy communication, making it potentially the most perilous phishing scam we’ve faced yet.

Imagine a typical day: you’re sifting through your emails, and you spot a message from a familiar company. Your initial reaction is one of trust—why wouldn’t it be? However, this sense of security is precisely what cybercriminals are banking on with SubdoMailing.

A red wood surface with keyboard keys strewn across. Scam is spelled by some of the keys.

How SubdoMailing Works

The methodology behind SubdoMailing is alarmingly simple yet effective. Cybercriminals diligently search for subdomains of reputable brands—those prefixes in a website URL that precede the main domain name, like the ‘experience’ in They target unused subdomains that still point to an unregistered external domain.

Once they identify such a subdomain, these criminals purchase the corresponding unregistered domain and set up their malicious site. To the unsuspecting eye, clicking on a link that appears to belong to might seem safe, but in reality, it redirects to a fraudulent site designed to steal sensitive information.

With an estimated five million emails dispatched daily targeting individuals and businesses alike, the illusion of legitimacy these emails possess allows them to bypass standard security protocols, landing straight into your inbox.

An image of a phone with the ios mail app at the bottom, showing 20 new emails.

Safeguarding Against SubdoMailing

To navigate this treacherous landscape and keep your data secure, consider the following advice:

  • Exercise Caution: Approach every email with a healthy dose of skepticism. If something feels off, it’s better to err on the side of caution.
  • Verify Before Clicking: Take a moment to scrutinize the sender’s details. Spelling errors or peculiar email addresses are telltale signs of phishing attempts.
  • Educate Your Team: Ensuring your employees are aware of and can recognize the latest phishing schemes is crucial. Knowledge is your first line of defense.
  • Invest in Security: While it may seem like an additional expense, robust security software is an invaluable investment in your company’s digital well-being.

At RDCS, we are committed to fostering a secure digital environment for businesses and individuals alike. Our expertise and dedication to excellence ensure that you have the support necessary to navigate these challenges. Should you require assistance with enhancing your email security or any other concerns, we are here to help.

1 thought on “4 Tips to Combat the Latest Phishing Threat – SubdoMailing”

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