Apple is ramping up its security efforts but its go-it-alone approach risks shutting allies out and protecting attackers. The tech giant has been battening down the hatchesespecially of Mac computer hardware. But instead of welcoming allied assistance via third-party security vendors, Apple is closing the gate. And cybercriminals are closing the gap. There was KeRanger ransomware in 2016. Several effective Mac-facing miners joined the crypto-rush in 2018. The iOS vulnerability exploited by checkm8 rattled quite a few cages in late 2019.”]