Cyber Security News


The 'dot notation' scam: be aware, be protected

Picture this: you receive an email from your streaming service. The sender is legitimate, the branding is perfect, and it’s sitting right in your primary inbox. But there’s a catch - you never actually opened that account. A clever new phishing tactic is targeting Gmail users by exploiting a loophole in how Google handles punctuation in email addresses and slipping past traditional defenses. In this guide, we break down exactly how this attack flow works, and the essential checklist you need to follow to secure your digital footprint today.

The Gmail Dot Notation Vulnerability

If your email is johnsmith@gmail.com, you own all dotted versions of your address. For example, you will automatically receive emails sent to john.smith@gmail.com, j.o.h.n.smith@gmail.com, or any other dot variation.  This behaviour is intended to reduce delivery issues when senders insert dots by mistake, but scammers can exploit it.

Here's the attack flow

Scammers create fake accounts using email variations on popular service platforms. Since these platforms treat 'jane.smith@gmail.com' and 'janesmith@gmail.com' as different accounts, attackers can register one account under the dotted version while your actual email inbox receives all communications sent to either address. 

The result is a convincing phishing email that appears to come from a legitimate company like your streaming service, but was triggered by an account the scammer created using a dot variant of your email address. To you, it looks completely real as it's genuinely from the company's servers; the cybercriminal is banking on you not noticing the difference in dots.  

Using Jane Smith and Netflix as an example, the attacker signs up to a Netflix account using jane.smith@gmail.com.  Once the account is created, they can force automated actions from Netflix by doing things like cancelling the credit card on the account which triggers an 'update your payment details' email.  Because of Google's 'dots don't matter' approach, the legitimate Netflix automated emails generated on the account jane.smith@gmail.com are delivered to janesmith@gmail.com.

If Jane Smith doesn't notice the dot in the email 'to' field, it is only a few easy clicks to respond to a payment details update request, believing her streaming account is about to be frozen, delivering free Netflix to the scammer until whatever time in the future Jane notices she is paying two subscriptions.

Essentially, forewarned is forearmed, and knowing to pay attention to the exact format of the email 'to' field has become another mental security check for us all to add to our repertoire.  And it just goes to show that while cybersecurity technology and security techniques are definitely must-haves, user education and awareness is increasingly important.  

How to Protect Your Email and Accounts

Below is a summary of techniques - both technical and visual verification assessments - that form a protective arsenal in thwarting any phishing attack. 


1

Excercise a healthy dose of skepticism

  • Identify the "Urgency & Emotion" Trigger (the psychological red flag): train yourself to pause the moment an email triggers a sense of fear, panic, excitement, or curiosity.
  • Practice "Out-of-Band" Verification: never use the contact information, links, or phone numbers provided inside the suspicious email. Instead, use an independent channel to verify - ie close the email, open your browser and manuallly go to the website to log in via your browser.
  • Check the domain in the From field: Although the from field may say 'Netflix support' or similar, check the actual domain in the senders email address (the part after the @ symbol) to assess whether it looks messy or unrelated to the company the email is presenting itself as
  • Never Click, Inspect the Link: hover over any links in the email without clicking.  Check the bottom left of your browser screen where it shows the url this link is set to go to - does it look right?
  • And the new one ... check for any dot anomalies in your email address in the 'to' field!
2

Use Strong, Unique Passwords + Password Manager

A password manager can help protect you by avoiding password reuse and by warning you if you’re about to enter your credentials on an unrecognised or fraudulent website, reducing the risk of this type of attack. 

Popular options include: 

  • Bitwarden (free and paid versions) 
  • 1Password (paid, Australian company support) 
  • LastPass (free and paid versions) 
3

Upgrade Your 2FA (Two-Factor Authentication)

Not all methods of 2FA are equal. Here's the hierarchy in terms of security: 

Hardware security keys (gold standard) 

Instead of relying on SMS-based 2FA, consider using a hardware security key, like Google's Titan Key or a YubiKey by Yubico. These are physical devices ensure that your second-factor authentication is bound to an object that hackers cannot steal digitally. They work with Gmail, Australian banks, and most online services. The devices look like small USB flash drives or key fobs, and instead of typing in a 6-digit text code for 2FA, you plug this physical key into your computer or tap it against your phone to achieve a cryptographic signature.

Passkeys (high security) 

Passkeys are resistant to phishing attacks and don't rely on SMS or email-based verification. When you use a passkey, you are establishing a digital handshake between your physical device (like your phone or laptop) and the website you want to log into using an advanced form of math called public-key cryptography. 

Authenticator apps (medium security) 

If you can't use hardware keys yet, use an authenticator app instead of SMS: 

  • Google Authenticator 
  • Microsoft Authenticator 

SMS authentication (better than no 2FA, but lower security)

SMS 2FA relies on vulnerable telecommunications networks, which can be intercepted through SIM swap attacks where scammers trick your Australian mobile provider into transferring your number to their device. This is a real threat in Australia. 

4

Set Up Recovery Options 

Keep recovery options current and ensure you have at least one additional trusted device or factor. Add: 

  • A backup recovery email (use a different email provider, not another Gmail account) 
  • A backup phone number (ideally a different provider than your main number) 
  • Backup codes (store these securely — print them and keep in a safe place, not in Google Drive) 

* Recovery options can be crucial on many accounts when using secure forms of login like 2FA.  If you lose the device that stores your passkey or your 2FA codes, you need another way to authenticate yourself to re-gain access to the account.  If you don't have a recovery method set up, there is no way for the account provider to prove that you aren't in fact the hacker trying to gain access to an account! 

5

Monitor Account Activity Regularly 

Regularly check your Google account's recent activity for any unfamiliar devices or logins. You can do this in the Security section of your Google Account settings (myaccount.google.com). Look for: 

  • Unknown devices accessing your account 
  • Login attempts from unfamiliar locations 
  • Login attempts at unusual times 
6

Review Third-Party App Access 

Attackers don't always need to log in if they can get persistent access through third-party apps, email forwarding, or delegated permissions (especially on social media apps). Review who and/or what has access to your account and remove anything you don't recognise. Pay special attention to apps that can:

  • read email 
  • manage files 
  • access contacts 
7

Enable Gmail's Advanced Protection Program 

This is a free program that adds stricter security checks. It's recommended if you're a high-risk target (journalist, activist, public figure, business owner, or concerned user) to install threat detection software. 

8

Keep Software Updated 

Always install the latest patches and updates on your computer, phone, and browser. Many session theft incidents begin with outdated software or malicious browser extensions.


Artificial intelligence is making phishing worse

AI-assisted phishing enables attackers to produce large volumes of well-written messages quickly, often tailored to specific roles or organisations.  This is making phishing attacks harder to detect, and making all the techniques above increasingly vital.  Scammers can test variations rapidly and adjust language to bypass controls and user suspicion. Increasingly, these messages are combined with other techniques such as address manipulation, compromised infrastructure, or credential-harvesting sites to form coordinated campaigns. 

Protecting your organisation or business

Staff should understand how to recognise common phishing patterns, handle credentials safely, verify unusual requests, and report suspicious activity quickly. Reinforcement through regular training helps maintain these behaviours over time. 

The CyberHeroes program is designed to provide foundational cybersecurity awareness for all staff, not only IT professionals. Delivered by IT Basecamp, it focuses on practical behaviours and reinforcement through short, regular training to help keep security awareness current and front-of-mind. 

What IT Basecamp recommends

If you are already using CyberHeroes, consider confirming that staff have completed the Fundamentals module and that new starters are enrolled as part of onboarding. If you are not currently enrolled in our CyberHeroes Concierge Service, IT Basecamp can provide an overview of the program, delivery options, and a recommended rollout approach for your organisation. 

As cyber threats continue to combine sophisticated techniques with persuasive content, an informed workforce remains a practical and cost-effective risk reduction measure. Organisations that reinforce awareness and reporting processes are better positioned to identify and contain email-based threats early. 

Contact IT Basecamp for a company security audit to assess your business's risk today.

Bottom Line

The best defence is layered protection:

  • Strong passwords 
  • Hardware 2FA (or at minimum, an authenticator app instead of SMS) 
  • Regular activity monitoring 
  • Reporting suspicious emails so Australian authorities can track down perpetrators 
  • Healthy scepticism about unexpected requests for information or action