libapache2-modsecurity software package provides Dummy transitional package, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libapache2-modsecurity
libapache2-modsecurity is installed in your system.
Make ensure the libapache2-modsecurity package were installed using the commands given below,
$ sudo dpkg-query -l | grep libapache2-modsecurity *
You will get with libapache2-modsecurity package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Web Servers |
| Package | libapache2-modsecurity |
| Version | 2.8.0-3 |
| Description | Dummy transitional package |
| Sub Section | HTTPD |