Why letsencrypt certificate generation not done like domain verification done by GSuite? [closed]

I have used letsencrypt’s certbot for creating certs for my domains. I have to download certbot and run in my machine and it gives a string to be placed in as dns record. I have to manually add the dns record. Then the certbot will verify … Continue reading Why letsencrypt certificate generation not done like domain verification done by GSuite? [closed]

Public key stored in server is different from what is shown in OpenSSL

I obtained an SSL certificate from LetsEncrypt for my web application using Apache web server. LetsEncrypt generated these 4 files:
cert.pem chain.pem fullchain.pem privkey.pem

As I understand, cert.pem is the public key. Now I tried t… Continue reading Public key stored in server is different from what is shown in OpenSSL

What stops a malicious DNS subdomain provider from impersonating my website?

First, some background: The DNS-01 verification method of Let’s Encrypt requires you to add a TXT record to a special subdomain your domain name to prove your identity. With ACMEv2, this can allow you to get a wildcard certificate, which w… Continue reading What stops a malicious DNS subdomain provider from impersonating my website?

Domain Joined computer doesn’t browser properly with any website with Let’s Encrypt CA cert

Navigating to any website with Let’s Encrypt CA cert and even after enabling the HTTPS Everywhere addon,

I’m getting “Your connection is not private”.
Getting this error from all the browser except Firefox

The certificate cannot be veri… Continue reading Domain Joined computer doesn’t browser properly with any website with Let’s Encrypt CA cert

This Week in Security: Let’s Encrypt Revocation, Ghostcat, and the RIDLer

Let’s Encrypt recently celebrated their one billionth certificate. That’s over 190 million websites currently secured, and thirteen full-time staff. The annual budget for Lets Encrypt is an eye-watering $3.3+ million, covered by sponsors like Mozilla, Google, Facebook, and the EFF.

A cynic might ask if we need to rewind the …read more

Continue reading This Week in Security: Let’s Encrypt Revocation, Ghostcat, and the RIDLer

Man-in-the-middle attack (ACME / Let’s Encrypt) on Authorization Key?

By looking at https://letsencrypt.org/how-it-works/, I got the feeling that a man-in-the-middle attack might be possible in the ‘Domain Validation’ phase.

During that phase, the admin is asked to e.g. perform the challenge of putting a f… Continue reading Man-in-the-middle attack (ACME / Let’s Encrypt) on Authorization Key?