A 401 Unauthorized error means the server requires authentication and the request either did not include credentials, or the credentials provided are invalid. In modern HTTPS APIs and microservices, 401 errors are increasingly caused by missing or invalid client...
A Basic Overview of RSA Key RSA (named after its co-creators - Ron Rivest, Adi Shamir, and Leonard Adleman) is one of the first public-key cryptosystems and is widely used for secure data transmission. It allows two parties - a sender and receiver to communicate...
What Can You Do If Your SSL Expires Having an SSL certificate is crucial for any website that handles sensitive user data like logins or transactions. But what happens if your SSL certificate expires? If you let that certificate expire, it can have serious...
Beginner's Guide to Setup an SSL Certificate in Python Python is a popular programming language used for a wide variety of applications, including web development. There are a few simple steps that need to be followed to install an SSL Certificate in Python. SSL...
ERR_CONNECTION_REFUSED is a Chrome browser error that appears when the server actively rejects your connection request instead of loading the page. The fix depends on where the problem originates - your browser, your network, or the website's server. Most cases...
What is HTTP Public Key Pinning (HPKP)? HTTP Public Key Pinning (HPKP) is a security feature that allows HTTPS websites to resist impersonation by attackers using mis-issued or fraudulent certificates. It allows sites to specify ("pin") which certificate authorities...
Quick Introduction About SSH (Secure Shell) SSH (Secure Shell) is a network protocol that creates encrypted connections between computers. It replaces insecure protocols like Telnet and FTP, which transmit data, including passwords, in plain text. The encryption used...
What Does Time Stamping Mean? Time stamping is the process of recording the date and time that a document, file, or data is created, modified, accessed, received, or sent. It provides a chronological reference point that establishes when information existed at a...
Know the Difference Between Datacenter Proxy and Residential Proxy Proxies are an essential tool for many online activities. They provide anonymity and bypass access restrictions. The two main types of proxies are data center proxies and residential proxies, which...
What’s the Difference Between OCSP vs CRL The management of digital certificates is a crucial aspect of cybersecurity, and the choice between OCSP (Online Certificate Status Protocol) and CRL (Certificate Revocation List) is a key consideration. OCSP vs CRL is a topic...