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Are older iOS and iPadOS devices still safe to use?
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<blockquote data-quote="MacDefender" data-source="post: 885694" data-attributes="member: 83059"><p>It's also worth mentioning that each new Apple chip has new hardware-specific security features too. No 32-bit chips have a Secure Enclave, and secure boot was reinvented with the 64 bit chips to be less vulnerable to physical attacks too. In the A13 generation almost every piece of firmware along with the kernel are made read-only early in boot so that it is impossible for attackers to introduce kernel-level code payloads, they can only live off the land. Pointer signing was recent too.</p><p></p><p>Old devices can have software devices patched, but new devices have much better built-in safeguards that make various classes of attacks difficult to carry out. Plus all of this leads to fewer attacks being developed against older devices -- after all, why bother creating an attack if it doesn't even run on the devices that 70+% of iOS users have?</p></blockquote><p></p>
[QUOTE="MacDefender, post: 885694, member: 83059"] It's also worth mentioning that each new Apple chip has new hardware-specific security features too. No 32-bit chips have a Secure Enclave, and secure boot was reinvented with the 64 bit chips to be less vulnerable to physical attacks too. In the A13 generation almost every piece of firmware along with the kernel are made read-only early in boot so that it is impossible for attackers to introduce kernel-level code payloads, they can only live off the land. Pointer signing was recent too. Old devices can have software devices patched, but new devices have much better built-in safeguards that make various classes of attacks difficult to carry out. Plus all of this leads to fewer attacks being developed against older devices -- after all, why bother creating an attack if it doesn't even run on the devices that 70+% of iOS users have? [/QUOTE]
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