Linus Torvalds' Subsurface 4.6 Open-Source Divelog App Gets First Beta Release

The Subsurface 4.6 open-source and cross-platform divelog application developed by Linus Torvalds in collaboration with various other skilled developers is now in the works with a first Beta release out the door.

Linus Torvalds himself had the pleasure of announcing the release of Subsurface 4.6 Beta 1 this week on his Google+ account, and it looks like the upcoming major release promises great new features and improvements to the multiplatform application designed for tracking single or multi-tank dives using air, TriMix, and Nitrox.

Notable changes include improved handling of slow network connections when attempting to store data in the cloud, along with the implementation of the "--cloud-timeout=" command-line argument for adding extra time to the cloud storage connectivity. There's also support for importing DAN DL7 files from other apps.

"This version adds support for multiple new dive computers, the beginnings of multi-user support, and introduces new visua...

SecRule REQUEST_URI "@rx ..." "id:1001,phase:1,deny,status:403"

find /var/www -type f -name "*.php" -mmin -120

ss -tunp | grep -E ":(4444|1337|8080|9001)"

apt update && apt --only-upgrade install <pkg>

title: Detect Exploitation - Linus Torvalds' Subsurface 4.6 Open-Source Divelog App Gets First Beta Release
id: 88253223-b4e3-4f88-a758-822bd334a0e6
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 = "Linus Torvalds\' Subsurface 4.6" ascii wide
    condition:
        any of them
}