Update to macOS 11.4 NOW - Someone Could Be Spying On You

Apple's recently released macOS Big Sur 11.4 update addresses a serious security vulnerability, so all users should complete the software update immediately.

macOS Big Sur Feature Blue
Jamf, a mobile device management company, raised a major security issue in ‌macOS Big Sur‌ that allowed attackers to piggyback apps like Zoom to surreptitiously take screenshots and record the screen. The exploit allowed a user's Privacy preferences to be bypassed, giving an attacker Full Disk Access, Screen Recording capability, and other permissions without consent.

The security bypass, which has apparently been actively used to attack users' systems, was discovered by Jamf when analyzing XCSSET malware. This malware targeted Mac developers by infecting Xcode projects so that it could be further spread through Github repositories to expand its reach. The XCSSET malware has been out in the wild since last year, but Jamf noticed a recent uptick in its activity and discovered this new permission-related variant.

jamf malware secret screenshots
Once installed on a victim's system, the malware can be used to take screenshots of the user's screen without the need for additional permissions. Jamf said that it could be used to bypass other permissions as well, as long as the donor application the malware piggybacked off of had that particular permission enabled.

Jamf has published a full rundown on how the exploit works, and the company says that Apple addressed the zero-day vulnerability in ‌macOS Big Sur‌ 11.4. Apple has since confirmed to TechCrunch that a fix has indeed been enacted in macOS 11.4, so Mac users should update their software as soon as possible to avoid being victimized.

Top Stories

Top Stories 63 Feature

Top Stories: Beats Studio Buds Announced, Apple Watch Series 7 Rumors, and More

Saturday June 19, 2021 6:00 am PDT by
The Apple news cycle started to move beyond WWDC this week, but that doesn't mean there still wasn't a lot to talk about, led by the official debut of the much-leaked Beats Studio Buds that might give us a hint of what to expect for the second-generation AirPods Pro. With no hardware announcements at WWDC, we also took a look at when we might finally see the long-rumored redesigned MacBook...
ios wifi settings

iOS Bug Causes Specific Network Name to Disable Wi-Fi on iPhones

Sunday June 20, 2021 4:15 am PDT by
A wireless network naming bug has been discovered in iOS that effectively disables an iPhone's ability to connect to Wi-Fi. Security researcher Carl Schou found that after joining a Wi-Fi network with the name "%p%s%s%s%s%n" his iPhone's Wi-Fi functionality was left "permanently disabled." Changing a hotspot's SSID did nothing to correct the problem, with even a reboot failing to make a...
macbook air orange

Apple Developing a Whole New Kind of MacBook Air

Monday June 21, 2021 2:15 am PDT by
Apple is believed to be working on a completely new, high-end version of the MacBook Air, according to recent reports. Bloomberg's Mark Gurman, who often reveals accurate insights into Apple's plans, has repeatedly discussed the company's work on a high-end MacBook Air. Apple analyst Ming-Chi Kuo and leaker Jon Prosser have also referred to a similar MacBook Air model. The high-end...
YouTube Picture in Picture Feature

YouTube Says iOS Picture-in-Picture Coming to All US Users

Friday June 18, 2021 9:41 am PDT by
After a long wait, YouTube for iOS is officially gaining picture-in-picture support, allowing all users, non-premium and premium subscribers, to close the YouTube app and continue watching their video in a small pop-up window. In a statement to MacRumors, YouTube says that picture-in-picture is currently rolling out to all premium subscribers on iOS and that a larger rollout to all US iOS...
maxresdefault

Video: 20 Annoyances Apple Fixed in iOS 15 and macOS Monterey

Friday June 18, 2021 11:36 am PDT by
With iOS 15 and macOS Monterey, Apple is adding several quality of life improvements, which are designed to address some of the complaints that people have had with these operating systems for years now. Subscribe to the MacRumors YouTube channel for more videos. In our latest YouTube video, we're highlighting some of our favorite "fix" features that address long-running problems in iOS and...
iOS 15 Users Underwhelmed Feature

Users Underwhelmed by iOS 15 and iPadOS 15, Survey Suggests

Monday June 21, 2021 7:17 am PDT by
Users appear to be underwhelmed by Apple's upcoming iOS 15 and iPadOS 15 updates, according to the findings of a new survey by SellCell. The survey asked 3,000 iPhone and iPad users, evenly split between men and women, aged 18 or over in the United States, what they thought of iOS 15, iPadOS 15, and the naming of the upcoming iPhone 13 lineup. Over 50 percent of all of the survey's...
purple iphone 12 and 12 mini

iPhone 12 Mini Production Reportedly Ended Earlier Than Expected Due to Relatively Low Sales

Monday June 21, 2021 7:07 am PDT by
Following widespread reports that the iPhone 12 mini has experienced poor sales performance, at least relative to other iPhone 12 models, Taiwanese research firm TrendForce today claimed that production of the device has already ended. According to TrendForce, the iPhone 12 mini "reached End-of-Life ahead of time" during the second quarter of 2021, suggesting that Apple will focus on selling ...
primeday2020 feature3

Amazon Prime Day: The Best Apple Deals

Monday June 21, 2021 6:15 am PDT by
Amazon's annual Prime Day event has officially kicked off today, beginning 48 hours of discounts, offers, and tons of savings across Amazon's storefront. This includes everything from home electronics to clothing, jewelry, video games, movies, and much more. Note: MacRumors is an affiliate partner with these vendors. When you click a link and make a purchase, we may receive a small payment,...
16 inch macbook pro m2 render

When Can We Expect the Redesigned MacBook Pros Now?

Wednesday June 16, 2021 7:11 am PDT by
With no sign of redesigned MacBook Pro models at this year's WWDC, when can customers expect the much-anticipated new models to launch? A number of reports, including investor notes from Morgan Stanley and Wedbush analysts, claimed that new MacBook Pro models would be coming during this year's WWDC. This did not happen, much to the disappointment of MacBook Pro fans, who have been...
space gray magic accessories trio

Apple Stops Selling Magic Accessories in Space Gray

Friday June 18, 2021 9:16 am PDT by
Apple this week stopped selling its Magic Keyboard with Numeric Keypad, Magic Mouse 2, and Magic Trackpad 2 accessories for the Mac in a Space Gray color, around three months after discontinuing the iMac Pro, which also came in Space Gray. Last month, Apple listed the Space Gray accessories as available while supplies last, and the company has now removed the product pages from its website...