Outlook is the latest Microsoft app to pass 100 million installs

Another Microsoft app passed the 100 million installs milestone.



What you need to know


Microsoft Outlook recently reached 100 million installs on Android.
Several Microsoft apps have more than 100 million installs, including OneDrive, Word, and Excel.
Outlook for Android regularly receives updates and new features.


Microsoft Outlook for Android recently reached 100 million installs via MSPU. Outlook joins several other Microsoft apps that passed the milestone. OneDrive, Word, and Excel all have over one billion installs, and PowerPoint has over 500 million. SwiftKey also recently reached 500 million installs.

The Google Play Store only updates install numbers for major milestones, such as 50 million, 100 million, 500 million, and one billion. As a result, we can't tell the exact date that Outlook passed 100 million installs, though it appears to have occurred over the weekend.

Outlook is a part of Microsoft's continued efforts on Android. Microsoft has dozens of popular apps ...

nmap -sV --script vuln -p- <target-network>

tail -f /var/log/suricata/fast.log | grep <cve>

Check Vendor Security Advisory Bulletin

title: Detect Exploitation - Outlook is the latest Microsoft app to pass 100 million installs
id: 3370d1c5-7e41-4d77-ae6d-a51c860c24c1
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
  - https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-24
logsource:
  category: network_connection
  product: any
detection:
  selection:
      CommandLine|contains:
        - 'exploit'
  condition: selection
falsepositives:
  - Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
  - attack.initial_access

rule CTI_Threat_Indicator {
    meta:
        author = "iShareStuff CTI Automated Detection Engine"
        date = "2026-09-24"
        description = "YARA Signature for "
    strings:
        $str = "Outlook is the latest Microsof" ascii wide
    condition:
        any of them
}