Falco Rules Changelog

Falco rules are used in the Sysdig Secure Policy Editor. On this page, you can read the most recent changes to Falco Rules.

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Commit Date

Rule Notes

Version of the Falco Rules Installer (On-Prem)

February 16, 2026

Rule Changes

  • Reduced FPs for Reverse Shell Detected rule.

  • Reduced FPs for Dynamic Linker Hijacking Using ld.so Files rule.

  • Reduced FPs for Run shell untrusted rule.

0.236.2

February 13, 2026

Rule Changes

  • Reduced FPs for Unprivileged Delegation of Page Faults Handling to a Userspace Process rule.

  • Reduced FPs for Mount Launched in Privileged Container rule.

  • Reduced FPs for Dynamic Linker Hijacking Using ld.so Files rule.

  • Reduced FPs for Container Escape using Kernel Module rule.

  • Reduced FPs for Create Symlink Over Sensitive Files rule.

  • Reduced FPs for Drop and Execute /tmp Binary rule.

0.236.1

February 10, 2026

Rule Changes

  • Reduced FPs for Dynamic Linker Hijacking Using ld.so Files rule.

  • Reduced FPs for Launch Suspicious Network Tool in Container rule.

  • Reduced FPs for Clear Log Activities rule.

  • Reduced FPs for Reverse Shell Detected rule.

  • Reduced FPs for Mailbox Data Modification rule.

  • Reduced FPs for Launch Excessively Capable Container rule.

  • Reduced FPs for Suspicious RC Script Modification rule.

0.236.0

February 09, 2026

Rule Changes

  • Reduced FPs for Reverse Shell Detected rule.

  • Reduced FPs for Contact Task Metadata Endpoint rule.

  • Reduced FPs for Redirect STDOUT/STDIN to Network Connection in Container rule.

  • Reduced FPs for Run shell untrusted rule.

  • Reduced FPs for Execution of binary using ld-linux rule.

  • Reduced FPs for New Kernel Module Created and Loaded rule.

0.235.4

February 06, 2026

Rule Changes

  • Reduced FPs for Base64-encoded Python Script Execution rule.

  • Reduced FPs for Fileless Malware Detected (memfd) rule.

0.235.3

February 05, 2026

Rule Changes

  • Reduced FPs for Offensive Security Tool Detected rule.

  • Reduced FPs for Suspicious Java Child Processes rule.

  • Reduced FPs for Reverse Shell Redirects STDIN/STDOUT Using UNIX Socket rule.

  • Reduced FPs for Suspicious io_uring Activity Detected rule.

  • Reduced FPs for Container Escape using Kernel Module rule.

0.235.2

February 04, 2026

Rule Changes

  • Reduced FPs for Base64-encoded Python Script Execution rule.

  • Reduced FPs for Dynamic Linker Hijacking Using ld.so Files rule.

  • Reduced FPs for BPFDoor Backdoor Activity Detected rule.

  • Reduced FPs for Drop and Execute /tmp Binary rule.

  • Reduced FPs for Find GCP Credentials rule.

0.235.1

February 03, 2026

Rule Changes

  • Reduced FPs for Run Several XLarge EC2 Instances.

  • Reduced FPs for eBPF Program Loaded into Kernel rule.

  • Reduced FPs for Execution from /tmp rule.

  • Reduced FPs for AWS SSM Agent Activity using StartSession rule.

0.235.0

February 02, 2026

Rule Changes

  • Reduced FPs for Create Symlink Over Sensitive Files rule.

  • Reduced FPs for Instance Metadata Service Contacted During Package Install rule.

  • Reduced FPs for Suspicious io_uring Activity Detected rule.

  • Reduced FPs for Run shell untrusted rule.

  • Reduced FPs for Execution from /tmp rule.

  • Reduced FPs for Reverse Shell Detected rule.

  • Reduced FPs for Launch Suspicious Network Tool in Container rule.

0.234.3

January 30, 2026

Rule Changes

  • Reduced FPs for Dynamic Linker Hijacking Using ld.so Files rule.

  • Reduced FPs for Find GCP Credentials rule.

  • Reduced FPs for Suspicious RC Script Modification rule.

0.234.2

January 28, 2026

Rule Changes

  • Reduced FPs for Dynamic Linker Hijacking Using ld.so Files rule.

  • Reduced FPs for Clear Log Activities rule.

  • Reduced FPs for Reconnaissance attempt to find SUID binaries rule.

  • Reduced FPs for Reconnaissance attempt to find SETGID binaries rule.

0.234.1

January 27, 2026

New Rules

  • Added rule CodeCommit Create Git Credentials.

  • Added rule Change Policy's Default Version.

Rule Changes

  • Reduced FPs for Base64-encoded Python Script Execution rule.

  • Reduced FPs for Drop and Execute /tmp Binary rule.

  • Reduced FPs for Reverse Shell Spawned From Binary Through Pipes rule.

  • Reduced FPs for Modify Grub Configuration Files rule.

  • Reduced FPs for Reverse Shell Redirects STDIN/STDOUT Using UNIX Socket rule.

0.234.0

January 26, 2026

Rule Changes

  • Reduced FPs for Execution from Temporary Filesystem (tmpfs) rule.

  • Reduced FPs for Reverse Shell Spawned From Binary Through Pipes rule.

  • Reduced FPs for Modification of Container Image Cache rule.

  • Reduced FPs for Reverse Shell Redirects STDIN/STDOUT Using UNIX Socket rule.

  • Reduced FPs for Find GCP Credentials rule.

  • Reduced FPs for Drop and Execute /tmp Binary rule.

  • Reduced FPs for Dynamic Linker Hijacking Using ld.so Files rule.

0.233.3

January 23, 2026

Rule Changes

  • Reduced FPs for New Kernel Module Created and Loaded rule.

  • Reduced FPs for Drop and Execute /tmp Binary rule.

  • Reduced FPs for Dynamic Linker Hijacking Using ld.so Files rule.

0.233.2

January 22, 2026

Rule Changes

  • Reduced FPs for Dynamic Linker Hijacking Using ld.so Files rule.

  • Reduced FPs for Suspicious Operations with Firewalls rule.

  • Reduced FPs for Launch Suspicious Network Tool on Host rule.

  • Reduced FPs for Drop and Execute /tmp Binary rule.

  • Reduced FPs for PTRACE Attached to Process rule.

  • Reduced FPs for BPFDoor Backdoor Activity Detected rule.

  • Reduced FPs for Reverse Shell Redirects STDIN/STDOUT To Socket with Pipes rule.

0.233.1

January 20, 2026

Rule Changes

  • Reduced FPs for EC2 Create Launch Template rule.

  • Reduced FPs for Reverse Shell Detected rule.

  • Reduced FPs for Reverse Shell Spawned From Binary Through Pipes rule.

  • Reduced FPs for Launch Ingress Remote File Copy Tools in Container rule.

  • Reduced FPs for DNS Fast Flux Activity Detected rule.

0.233.0

January 16, 2026

Rule Changes

  • Reduced FPs for Modify Grub Configuration Files rule.

  • Reduced FPs for Reverse Shell Redirects STDIN/STDOUT Using UNIX Socket rule.

  • Reduced FPs for Dynamic Linker Hijacking Detected rule.

  • Reduced FPs for Execution from /dev/shm rule.

  • Reduced FPs for BPFDoor Backdoor Activity Detected rule.

  • Reduced FPs for Dump Memory using /proc Filesystem rule.

  • Reduced FPs for Detect reconnaissance scripts rule.

  • Reduced FPs for nsenter Container Escape rule.

0.232.2

January 14, 2026

Rule Changes

  • Reduced FPs for Mount Launched in Privileged Container rule.

  • Reduced FPs for Launch Ingress Remote File Copy Tools in Container rule.

  • Reduced FPs for Detect reconnaissance scripts rule.

  • Reduced FPs for Mount on Container Path Detected rule.

  • Reduced FPs for Linux Kernel Module Injection Detected rule.

  • Reduced FPs for Reverse Shell Spawned From Binary Through Pipes rule.

0.232.1

January 13, 2026

Rule Changes

  • Reduced FPs for nsenter Container Escape rule.

  • Reduced FPs for EC2 Get User Data.

  • Reduced FPs for EC2 Create Launch Template.

  • Reduced FPs for Read sensitive file untrusted rule.

  • Reduced FPs for Dynamic Linker Hijacking Detected rule.

  • Reduced FPs for Execution from /dev/shm rule.

  • Reduced FPs for Base64-encoded Shell Script Execution rule.

  • Reduced FPs for Reverse Shell Detected rule.

  • Reduced FPs for New Kernel Module Created and Loaded rule.

  • Reduced FPs for Dynamic Linker Hijacking Using ld.so Files rule.

  • Improve Output for Allocate New Elastic IP Address to AWS Account.

0.232.0

January 09, 2026

Rule Changes

  • Reduced FPs for JVM Attach Attempt using Unix Socket rule.

  • Reduced FPs for DNS Fast Flux Activity Detected rule.

  • Reduced FPs for Reverse Shell Detected rule.

  • Reduced FPs for PTRACE attached to process rule.

  • Reduced FPs for BPFDoor Backdoor Activity Detected rule.

  • Reduced FPs for Network Tool Executed During NPM Install rule.

  • Reduced FPs for DNS Lookup for Proxy/VPN Domain Detected rule.

0.231.7

January 05, 2026

Rule Changes

  • Reduced FPs for Create Symlink Over Sensitive Files rule.

  • Reduced FPs for Possible Remote Command Execution Detected rule.

  • Reduced FPs for BPF Command Executed by Fileless Program rule.

  • Reduced FPs for Modify Grub Configuration Files rule.

0.231.6