Originally published at TerminalTools — https://terminaltools.blogspot.com/2024/08/man-in-middle-mitm-attacks.html
Why you should care about MITM attacks
When you connect to a website, send an email, or log in to your bank, you expect that your information travels safely to the right destination. But in a Man-in-the-Middle (MITM) attack, a cybercriminal silently places themselves between you and the service you’re trying to reach. They can steal passwords, spy on your conversations, or even alter the data in real-time. The good news? With the right defenses, you can reduce the risk dramatically.
1. Always check for HTTPS
Before entering login details or sensitive information, make sure the website uses HTTPS. Look for the padlock icon in your browser. If you see a warning about an untrusted certificate, never ignore it—this can be a sign of a MITM attempt.
2. Use a trusted VPN on public networks
Public Wi-Fi networks in airports, cafés, or hotels are a hotspot for attackers. A secure VPN encrypts your traffic, making it much harder for anyone nearby to snoop or manipulate your connection. Choose a VPN from a trusted provider and enable it whenever you use unsecured networks.
3. Turn on multi-factor authentication (MFA)
Even if attackers intercept your login credentials, MFA can stop them from breaking into your accounts. Use apps like Google Authenticator, Authy, or hardware keys such as YubiKey for better protection against credential theft.
4. Keep your software and devices updated
Operating systems, browsers, and apps release updates that fix security flaws. Outdated devices are easier to exploit. Enable automatic updates whenever possible and regularly check for firmware updates on your router and other connected devices.
5. Watch out for suspicious Wi-Fi networks
Attackers often create fake Wi-Fi hotspots with names similar to trusted networks. Always verify the correct network name with the staff if you are in a café, airport, or hotel. When in doubt, avoid connecting.
6. Protect DNS with secure options
DNS attacks can redirect you to fake websites without you noticing. Use DNS services that support DNS over HTTPS (DoH) or DNSSEC. Many browsers now let you enable secure DNS in their settings with just a click.
7. Monitor your accounts for unusual activity
Early detection is key. Set up account alerts for logins, password resets, or financial transactions. If something looks off, change your credentials immediately and review your security settings.
Quick defensive checklist
- Always verify HTTPS before entering sensitive data.
- Use a VPN on public Wi-Fi networks.
- Enable MFA on all important accounts.
- Update your devices and apps regularly.
- Double-check Wi-Fi network names before connecting.
- Enable secure DNS in your browser or router.
- Monitor your accounts for suspicious activity.
Final thoughts
MITM attacks are sneaky, but they are not unstoppable. Most of them succeed because users skip basic precautions. By securing your connections with HTTPS, VPNs, MFA, and regular updates, you make it far harder for attackers to interfere. Stay alert, practice good security habits, and you’ll keep your online data much safer.
Originally published at TerminalTools — https://terminaltools.blogspot.com/2024/08/man-in-middle-mitm-attacks.html
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