Search results
Results From The WOW.Com Content Network
Seeing security certificate errors when visiting certain websites? Learn how to remedy this issue in Internet Explorer.
Quality and acceptance vary worldwide for IT security credentials, from well-known and high-quality examples like a master's degree in the field from an accredited school, CISSP, and Microsoft certification, to a controversial list of many dozens of lesser-known credentials and organizations.
• Fake email addresses - Malicious actors sometimes send from email addresses made to look like an official email address but in fact is missing a letter(s), misspelled, replaces a letter with a lookalike number (e.g. “O” and “0”), or originates from free email services that would not be used for official communications.
While all expired certificates are considered invalid, not all unexpired certificates should be valid. CRLs or other certificate validation techniques are a necessary part of any properly operated PKI, as mistakes in certificate vetting and key management are expected to occur in real world operations.
A web browser will give no warning to the user if a web site suddenly presents a different certificate, even if that certificate has a lower number of key bits, even if it has a different provider, and even if the previous certificate had an expiry date far into the future.
One of the largest providers of HTTPS certificates, Let’s Encrypt, saw its root certificate expire this week — meaning you might need to upgrade your devices to prevent them from breaking.
Certificate revocation is "an important tool" for dealing with attacks and accidental compromises. RFC 9325 places a normative requirement on TLS implementations to have some means of distrusting certificates. [9]
The group's primary focus [15] was promoting an understanding of the importance of certificate revocation checking and the benefits of OCSP stapling. The protocol is intended to ensure that web users are aware when they visit a web site with a revoked or expired SSL certificate. [16]