Denis V (Artprima)

Each time you login to your blog WordPress creates a session cookie which is used to authenticate you. 
By default if someone somehow gets your cookies he (or she) is able to use them to compromise your blog 
(even without having to know your password!). To prevent this you may want to make your auth cookies 
ip-dependent so that they could be valid only for that ip which you used during login.
Use this plugin only if you have a static IP or dynamic which doesn’t change too often. Otherwise, you’ll 
have to enter your login and password each time your IP changes.

IP Dependent Cookies

Plugin IP Dependent Cookies makes your Wordpress installation more secure adding your IP to salt (which makes cookies IP-dependent).

monzur

Plug Error Handler is a lightweight and safety-focused WordPress plugin that helps prevent white screens or fatal crashes caused by problematic plugins. It does this by automatically detecting and deactivating any plugin that throws a PHP fatal error or parse error during activation or update.
It’s designed to ensure a smooth admin experience by intercepting site-breaking issues at the moment they occur.
<h3>🔐 Key Features</h3>
<ul>
<li>Detects PHP fatal errors, parse errors, compile errors, and core errors.</li>
<li>Automatically deactivates the faulty plugin during activation or update.</li>
<li>Displays a clear admin notice indicating which plugin caused the issue and what type of error it triggered.</li>
<li>Lightweight: No database usage (uses transients), no impact on performance.</li>
<li>No settings page — works silently in the background for your safety.</li>
</ul>
<h3>⚠️ Limitations</h3>
<ul>
<li>Only handles PHP errors — does not detect:
<ul>
<li>JavaScript errors</li>
<li>CSS conflicts</li>
<li>Plugin conflicts that don’t produce fatal errors</li>
</ul>
</li>
<li>Only handles errors during activation or update (not runtime issues).</li>
<li>Designed for administrator-level users who manage plugin changes.</li>
</ul>
<h3>License</h3>
This plugin is licensed under the GPLv2 or later. See https://www.gnu.org/licenses/gpl-2.0.html for details.

Plug Error Handler

Automatically detects and deactivates plugins that cause PHP fatal or parse errors during activation or update to prevent site crashes.

IP Dependent Cookies vs Plug Error Handler