Could a certificate authority and a ISP preform a MITM attack on HTTPS traffic?

I’m just wondering if it is technically possible for your ISP to work with a certificate authority (either compelled by a government agency or otherwise) to create a MITM attack to see into your https traffic. I’ve used a few MITM servers… Continue reading Could a certificate authority and a ISP preform a MITM attack on HTTPS traffic?

Man-in-the-middle attack in SSH when attacker copies the public key

Assuming password-less authentication, if an attacker is able to gain access to the public key on a host server, they can set up a different machine between the client and the server and place the key there.
When clients connect via SSH, t… Continue reading Man-in-the-middle attack in SSH when attacker copies the public key

Is macOS installing known bad Certificate Authorities by default?

Today I was checking out macOS security and privacy guide, and when I looked at my keychain, I was surprised to find Startcom CA and Symantec CA trusted by default. Isn’t this supposed to be vulnerable to MITM?

Continue reading Is macOS installing known bad Certificate Authorities by default?

What are the potential security risks of using a commercial VPN service?

Commercial VPN services are gaining a lot of popularity and some of them are heavily advertising their products on social media networks and technology magazines today.

The advantages of using such a service could be privacy from ISPs an… Continue reading What are the potential security risks of using a commercial VPN service?