- #MAC WEBSITES NOT LOADING CORRECTLY HOW TO#
- #MAC WEBSITES NOT LOADING CORRECTLY UPDATE#
- #MAC WEBSITES NOT LOADING CORRECTLY PATCH#
- #MAC WEBSITES NOT LOADING CORRECTLY UPGRADE#
- #MAC WEBSITES NOT LOADING CORRECTLY SOFTWARE#
PS: I make Open Source software to help with the security of websites. We are people who understand security and we shake our head in disbelief when we see someone intentionally deciding to use something that can no longer cope with contemporary threat models.
#MAC WEBSITES NOT LOADING CORRECTLY UPDATE#
Now you know all the gory details and the reason people telling you to update are not corporate shills, zealots or (insert expletives and wild accusations here).
#MAC WEBSITES NOT LOADING CORRECTLY PATCH#
Security measures evolve and old software can't be updated forever to cater for them in fact, old software needed rewriting (refactoring) to get there which is why you have a new version instead of just a patch to the old version. The threat models in 2021 are vastly different from those in 2015 which were vastly different from those in 2009. It's not planned obsolescence, it's common sense for those of us working in any IT security related position. When people tell you that using a long obsolete OS is a security nightmare they mean it. The latter is something only supported by browsers and OS released in the last two years. having a public audit log detailing which certificates are issued by which CA and when, therefore preventing spoofed certificates from being used. There are more architectural elements being added, e.g. Another fundamental architectural element of security is certificate revocation. Certificates expire to prevent eternal trust which can lead to major security mishaps. It is a fundamental element of the security of public key cryptography which has existed since the 1970s. I'd like to correct the people who said that this is planned obsolescence.
#MAC WEBSITES NOT LOADING CORRECTLY UPGRADE#
The only real solution is to upgrade macOS to something more recent. They see the primary chain of trust is broken and no longer trust Let's Encrypt's certificates.
#MAC WEBSITES NOT LOADING CORRECTLY HOW TO#
While they were cross–signing their certificate with another certification authority older OS and browsers, like yours, don't know how to use that information. One of the intermediate certification authorities used by the popular and free of charge Let's Encrypt certificates expired last week. El Capitan was released in 2015, before that possibility was in place. The only problem with this approach is that browsers and Operating Systems released before ~2017 didn't support this workaround. In our example, Acme Corp may choose to have its certificate signed by both Yoyodyne Inc and Another Trusted Company SA knowing that Yoydyne's certificate will expire soon but Another Trusted Company's certificate has another 5 or so years of validity. have a certificate signed by two different certification authorities. One way to work around that problem is doing cross-signing, i.e. So what happens when a certificate in the chain of trust expires? Well, the chain breaks and the certificate isn't valid anymore! In the example above if Yoyodyne Inc's certificate expires then Acme Corp's certificate is no longer trusted, therefore the site's certificate isn't trusted either. Actual site certificates used to last for 2 years but browser makers now push to reduce that to around 3 months shorter expiration times mean that a stolen / compromised certificate is of limited use. The intermediate authorities' certificates last less than that, in the 5–10 years range. Typically, root CA certificates last for 10–20 years. This is called a chain of trust.Ĭertificates, however, don't last forever. So now the OS/browser thinks like that: I trust Trusted Company SA which trusts Yoyodyne Inc which trusts Acme Corp which trusts, therefore I can trust. But then it sees that Yoyodyne Inc's certificate is signed by Trusted Company SA, it can verify it and it has Trusted Company SA's certificate in its root Certification Authorities cache. The OS/browser verifies it but still doesn't know who Yoyodyne is.
It sees that Acme Corp's certificate is signed by Yoyodyne Inc. The OS/browser verifies that but it doesn't know who the heck is Acme Corp. The server says it has a TLS certificate signed by Acme Corp. The only way for trust to be established is to have a cache of these root CA certificates. The utmost trusted parties are called root Certification Authorities, or root CA for short.Ī browser or Operating System needs to know which TLS certificates to trust. They are cryptographically signed by a trusted party's certificate which is in turn cryptographically signed by a more trusted party's certificate and so on. Long story: TLS certificates (what gives the S to HTTPS) by themselves mean nothing.
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