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A week ago, Apple surprised everyone by launching a new app and service named “Invites.” However, this launch has led to some unfair criticism about Apple’s approach to apps, suggesting they operate like Google does with its apps.

Google is well-known for starting new apps and services but then either shutting them down or merging them into something else. A good example is Google Podcasts, which didn’t last long. There’s practically a “graveyard” of Google apps that didn’t make it.

After the launch of Invites, some people started to think Apple does the same thing with its apps. But is that really true?

Not Dead Yet

Take the Apple Sports app, for example. It’s been around for a year now, and it keeps getting better. People love it so much they’re asking for a widget for their phones. It’s clear this app isn’t just left to die; it’s growing in popularity.

Then there’s the Journal app, which first appeared with iOS 17.2 in December 2023. By the time iOS 18 rolled out, the app had a significant update to version 2.0, bringing new features like search, sort options, audio transcripts, and more. The only thing missing is an iPad version, not updates.

Apple Music Classical, initially iPhone-only, expanded to include an iPad app and added features like album booklets. It even got a CarPlay app and Siri support.

Music Memos’ Legacy

Music Memos was an app for musicians to record their tunes. It lasted for five years before Apple decided to enhance the built-in Voice Memos app instead. Now, Voice Memos can record two tracks at once, which is great for songwriters who use voice and guitar.

Clips in the Classroom

Apple Clips isn’t dead either. It’s thriving in educational settings with features like royalty-free music and templates that teachers can use in their lessons. Instead of abandoning it, maybe Apple should focus on making a simpler video editing app like CapCut, but without the ByteDance connection.

Looking Ahead for Invites

The future of the Invites app might include tight integration with the Calendar app and could come pre-installed on new iPhones. Its success will depend on turning users into iCloud+ subscribers and having a strong advocate within Apple, similar to how Apple Sports has been championed.

In summary, Apple’s so-called “hobby apps” aren’t just side projects; they’re part of a broader strategy where apps are nurtured, updated, and sometimes transformed to better serve users.

The digital landscape is constantly evolving, and with it, the threats that target our devices. For Mac users, the built-in security suite, XProtect, stands as a crucial first line of defense. But how effective is it? What exactly does it protect against? This article delves into the inner workings of XProtect, exploring its components, detection methods, and the specific malware it targets, offering a comprehensive look at macOS security in 2025. 

My journey into the world of macOS security has been a fascinating one. From attending security conferences in unexpected locations, like my trip to Kyiv for Objective-See’s Objective by the Sea v2.0, to engaging with leading security experts, I’ve gained invaluable insights into the ever-present battle against malware. This exploration culminates in a detailed examination of XProtect, a topic I began investigating last year and have continued to refine as Apple updates its defenses.

XProtect: More Than Just a Malware Blocker

Introduced in macOS X 10.6 Snow Leopard back in 2009, XProtect initially served as a simple malware detector, alerting users to potentially harmful files during installation. However, it has evolved significantly over the years. The 2022 retirement of the Malware Removal Tool (MRT) marked a turning point, paving the way for XProtectRemediator (XPR), a more sophisticated anti-malware component responsible for both detecting and removing threats. 

XProtect’s strength lies in its use of Yara rules, an open-source tool that identifies malware based on specific patterns within its code or metadata. This allows Apple, and indeed anyone, to create custom detection rules.  

Today, the XProtect suite comprises three key components:

• XProtect App: This component uses Yara rules to scan applications upon launch, modification, or signature updates, detecting known malware.

  XProtectRemediator (XPR): XPR takes a more proactive approach, regularly scanning the system for threats using Yara rules and other methods. These scans occur in the background during periods of low activity, minimizing performance impact.

  XProtectBehaviorService (XBS): Introduced more recently, XBS monitors system behavior, looking for suspicious activity related to critical resources.

The Challenge of Obfuscated Signatures

One of the challenges in understanding XProtect’s capabilities is Apple’s use of internal naming schemes for its Yara rules. While this obfuscation serves a security purpose, it makes it difficult to pinpoint the exact malware being targeted. For instance, while some rules have relatively clear names like XProtect_MACOS_PIRRIT_GEN (targeting Pirrit adware), many are given generic names like XProtect_MACOS_2fc5997 or internal codenames like XProtect_snowdrift.

This is where the work of security researchers like Phil Stokes of Sentinel One Labs and independent researcher Alden becomes crucial. Stokes maintains a public repository on GitHub that maps Apple’s obfuscated signatures to common malware names recognized by security vendors and public scanners like VirusTotal. Alden has made significant strides in understanding XPR’s functionality by extracting Yara rules directly from its scanning modules. 

Locating XProtect on Your Mac

XProtect is enabled by default on all macOS installations and operates silently in the background. Updates are also automatic. To locate XProtect on your system: 

1. Open Finder and navigate to Macintosh HD > Library > Apple > System > Library > CoreServices.
2. Locate “XProtect” and right-click (or Control-click).
3. Select “Show Package Contents.”
4. Navigate to Contents > MacOS.

Important Note: While XProtect provides a solid baseline of protection, it primarily focuses on known threats. Relying solely on XProtect is not advisable. Employing reputable third-party anti-malware solutions is strongly recommended for enhanced security.

XProtectRemediator v147: A Look at the Malware Arsenal

XPR’s scanning modules are responsible for malware removal. Examining version 147 reveals a targeted approach against a variety of threats. Here’s a breakdown of some of the identified remediators:

• Adload: This adware and bundleware loader has been targeting macOS users since 2017, demonstrating a persistent threat. Recent XProtect updates have significantly improved the detection of this malware.
• BlueTop: Identified as a Trojan-Proxy campaign documented by Kaspersky in late 2023.
• ColdSnap: Likely targeting the macOS version of the SimpleTea malware, a Remote Access Trojan (RAT) with ties to the 3CX breach and similarities to Linux and Windows variants.
• Crapyrator: Identified as macOS.Bkdr.Activator, a large-scale malware campaign discovered in February 2024, potentially aimed at creating a macOS botnet or distributing further malware.

  DubRobber (XCSSET): A versatile and concerning Trojan dropper.

• Genieo: A widely known potentially unwanted program (PUP).

  KeySteal: A macOS information stealer first observed in 2021 and added to XProtect in February 2023.

• Pirrit: An adware family known for injecting ads, collecting browsing data, and manipulating search results.
• RankStank: Linked to the 3CX supply chain attack attributed to the Lazarus Group.
• SnowDrift: Identified as the CloudMensis macOS spyware.
• Trovi: A cross-platform browser hijacker similar to Pirrit, known for redirecting searches, tracking browsing history, and injecting ads.

Several other remediators, such as BadGacha, CardboardCutout, FloppyFlipper, GreenAcre, RoachFlight, SheepSwap, ShowBeagle, ToyDrop, and WaterNet, remain unidentified at this time, highlighting the ongoing effort to decipher XProtect’s full capabilities.

The Ongoing Evolution of macOS Security

The fight against malware is a constant arms race. Apple continuously updates XProtect to address emerging threats, and security researchers work tirelessly to uncover the intricacies of its defenses. By understanding the components and capabilities of XProtect, Mac users can gain a deeper appreciation for the built-in security measures and make informed decisions about their overall security posture. While XProtect provides a valuable layer of protection, combining it with reputable third-party security software remains the most effective approach to safeguarding your Mac in today’s complex digital world.