A big Monday for Apple news…

iOS 14.5: https://t.co/wgcOPQwkmD

App Tracking Transparency: https://t.co/LCXAKGqu0v

watchOS 7.4: https://t.co/uyCWJY5DqF

tvOS 14.5: https://t.co/ACEEbrJNfb

macOS Big Sur 11.3: https://t.co/Ug3KsiTucI

Apple Watch Unlock: https://t.co/zhAzn3wkmd

— Chance Miller (@ChanceHMiller) April 26, 2021

Apple introduces macOS 11.3 with big M1 improvements https://t.co/1nAbdV7glv

— XDA (@xdadevelopers) April 26, 2021

The macOS 11.3 update includes a massive security patch and new emoji https://t.co/mX8L3bHetO pic.twitter.com/SnBDdw15zO

— The Verge (@verge) April 26, 2021

（前澤友作さんのAI霊言） 事業を作るの？A. そんなの分かりません。https://t.co/flHkl6owIU

#THE #VERGE #The #macOS #11.3 #update #includes

— ふぁんてな⚡ (@fantenna3) April 26, 2021

"All the user would need to do is double click — and no macOS prompts or warnings are generated," @cedowens, who discovered the bug, told me. His proof of concept opened Calculator, but a malicious actor could use the same bug to steal user data.

More: https://t.co/kq44jQHreP pic.twitter.com/zji88sBwG0

— Zack Whittaker (@zackwhittaker) April 26, 2021

Kudos to Apple for quickly fixing the bug I reported to them. Here is my blog that delves into how I weaponized this bug with a payload: https://t.co/Bj8bQbpLx5. Thanks @patrickwardle for helping dive into the vuln as well ?? pic.twitter.com/tnMo3is0K8

— Cedric Owens (@cedowens) April 26, 2021

After @patrickwardle's writeup on the bug found by @cedowens in macOS, my team over at @JamfSoftware Protect found the bug being (ab)used in the wild ?https://t.co/8dhKTHw5z5@objective_see - https://t.co/JmjJCpX23Khttps://t.co/rtwZyn90muhttps://t.co/G2J4NEu5V6

— Stuart Ashenbrenner ?? ?? (@stuartjash) April 26, 2021

Safari in macOS 11.3 now supports WebM and Vorbishttps://t.co/B5yFPoJe7g pic.twitter.com/3uhatyvt2o

— Thomas Schranz ? (@__tosh) April 26, 2021

New: Apple has fixed a zero-day security vulnerability that allowed the notorious Shlayer malware to bypass most of macOS' in-built security protections.https://t.co/Q0j63hdSAg

— Zack Whittaker (@zackwhittaker) April 26, 2021

ICYMI: Jamf's cybersecurity experts in-depth research on the malicious Shlayer macOS malware.https://t.co/Bl6509rKcx

— Jamf (@JamfSoftware) April 26, 2021

In collaboration w/ @JamfSoftware, we uncovered the fact that attackers were *already* exploiting this flaw successfully as an 0day ?

Shortly, they'll be posting more about their findings & analysis: "Shlayer Malware Abusing Gatekeeper Bypass On Macos": https://t.co/wl1bj66Z7j pic.twitter.com/fcnk7I06Kg

— Objective-See (@objective_see) April 26, 2021

NEW: hackers were exploiting a "massive" bug in MacOS that allowed them to push malware that bypassed vortually all of Apple's security mechanisms on its operating system.

Researchers found one hacking group exploiting the bug since January of this year.https://t.co/AqeuFijmZX

— Lorenzo Franceschi-Bicchierai (@lorenzofb) April 26, 2021

Update to macOS 11.3 immediately. It patches a major flaw in how Apple prevents malicious software from running, and it has already been seen in the wild. https://t.co/ELpZy0iMWC

— Glenn Fleishman (@GlennF) April 26, 2021

Update your macOS systems to 11.3, as it contains a patch for a massive bug that affects all recent versions of #macOS quarantine & gatekeeper.

"Unfortunately users kept infecting themselves ... simply clicking through File Quarantine alerts"https://t.co/ohSKp9k4be pic.twitter.com/Y8e3ypcARB

— Odisseus (@_odisseus) April 26, 2021

"But first, go update your macOS systems to 11.3, as it contains a patch for a massive bug that affects all recent versions of macOS…a bug that is the topic of this blog post." https://t.co/YoYGq87egE

— Arek Dreyer (@arekdreyer) April 26, 2021

mac notarization may have introduced a big security bug: https://t.co/pTu4w8T9s1

— Vanessa McHale (@vamchale) April 26, 2021