CurseForge · Minecraft mod
OpenSecurity
Security addon for OpenComputers
Quick answer
Which OpenSecurity release should I use?
OpenSecurity 2.0.0 targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is OpenSecurity required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does OpenSecurity 2.0.0 need?
OpenSecurity 2.0.0. Change the file and its required mods may change too.
Install OpenComputers: Rebooted first. We found matching files for this game-version and loader setup. 3 come through another mod in the chain.
3 extra mods were pulled in by other dependencies. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add OpenSecurity without breaking your instance.
Built for OpenSecurity 2.0.0. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use OpenSecurity 2.0.0. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install OpenComputers: Rebooted first. We found matching files for this game-version and loader setup. 3 come through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside OpenSecurity 2.0.0. It opens that exact file at the source.
About this project
What does OpenSecurity add?

Adds security oriented components for use with OpenComputers, RFID Cards, MagStrip cards, Alarms and Entity Detectors.
OpenComputers forum post http://oc.cil.li/index.php?/topic/606-opensecurity-1710-oc-14/
Docs: https://github.com/PC-Logix/OpenSecurity/wiki
1.21.1 Builds use OpenComputers: Reloaded
Project description from CurseForge.
Pick your setup
OpenSecurity by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader build1.12.2
1 loader build1.10.2
1 loader build1.7.10
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
OpenSecurity versions and loaders
OpenSecurity 2.0.0
opensecurity-2.0.0.jar
10 Aug 2026
OpenSecurity-1.12.2-1.0-93.jar
12 Jan 2023
OpenSecurity-1.12.2-1.0-92.jar
6 Nov 2022
OpenSecurity-1.12.2-1.0-83.jar
7 Sept 2021
OpenSecurity-1.12.2-1.0-71.jar
16 Feb 2021
OpenSecurity-1.12.2-1.0-69.jar
9 Feb 2021
OpenSecurity-1.12.2-1.0-67.jar
5 Feb 2021
OpenSecurity-1.12.2-1.0-62.jar
2 Nov 2020
OpenSecurity-1.7.10-1.0-117.jar
4 Jan 2019
OpenSecurity-MC1.10.2-1.0-43.jar
10 Jul 2018
Looking for an older file? The official CurseForge project page is in Resources.