Our banned plugin list in no particular order
Adminer (adminer/adminer.php)
All In One WP Security (all-in-one-wp-security-and-firewall/wp-security.php)
api key (apikey/apikey.php)
BackUpWordPress (backupwordpress/backupwordpress.php)
BackWPup (backwpup/backwpup.php)
Batcache (batcache/batcache.php)
Better WP Security (better-wp-security/better-wp-security.php)
Better WP Varnish (better-wp-varnish/better-wp-varnish.php)
Broken Link Checker (broken-link-checker/broken-link-checker.php)
Cache Enabler (cache-enabler/cache-enabler.php)
CDN Speed Cache (speedcache/wp-cdn-linker.php)
CW Image Optimizer (cw-image-optimizer/cw-image-optimizer.php)
CodeTree Backup (the-codetree-backup/codetree-backup.php)
DBC Backup (dbc-backup/dbcbackup.php)
downML - Download Media Library (downml/downml.php)
EWWW Image Optimizer (ewww-image-optimizer/ewww-image-optimizer.php)
EWWW Image Optimizer Cloud (ewww-image-optimizer-cloud/ewww-image-optimizer-cloud.php)
Enforce Strong Password (enforce-strong-password/enforce-strong-password.php)
File Manager Advanced (file-manager-advanced/file_manager_advanced.php)
FlexiCache (flexicache/FlexiCache.php)
GZip Ninja Speed Compression (gzip-ninja-speed-compression/gzip-ninja-speed.php)
Hyper Cache (hyper-cache/plugin.php)
IP2Location Country Blocker (ip2location-country-blocker/ip2location-country-blocker.php)
iQ Block Country (iq-block-country/iq-block-country.php)
iThemes Security Pro (ithemes-security-pro/ithemes-security-pro.php)
Limit Login Attempts (limit-login-attempts/limit-login-attempts.php)
Login LockDown (login-lockdown/loginlockdown.php)
Loginizer (loginizer/loginizer.php)
Multi-Varnish HTTP Purge (multi-varnish-http-purge/multi-varnish-http-purge.php)
Nginx (nginx-helper/nginx-helper.php)
Online Backup for WordPress (wponlinebackup/wponlinebackup.php)
Page Generator Pro (page-generator-pro/page-generator-pro.php)
PressBackup (pressbackup/main.php)
Quick Cache (quick-cache/quick-cache.php)
Secupress (secupress/secupress.php)
Simple Backup (simple-backup/simple-backup-plugin.php)
Snapshot Backup (snapshot-backup/snapshot-backup.php)
ThreeWP Activity Monitor (threewp-activity-monitor/ThreeWP_Activity_Monitor.php)
Total Backup (total-backup/total-backup.php)
Varnish HTTP Purge (varnish-http-purge/varnish-http-purge.php)
Varnish WordPress (varnish-wp/varnish-wordpress.php)
Visitor Traffic Real Time Statistics pro (visitors-traffic-real-time-statistics-pro/visitors-traffic-real-time-statistics-pro.php)
W3 Total Cache (w3-total-cache/w3-total-cache.php)
WebP Converter for Media (webp-converter-for-media/webp-converter-for-media.php)
WP Complete Backup (wp-complete-backup/wp-complete-backup.php)
WP Changes Tracker (wp-changes-tracker/wp-changes-tracker.php)
WP Database Optimizer (wp-database-optimizer)
WP fail2ban (wp-fail2ban/wp-fail2ban.php)
WP Fastest Cache (wp-fastest-cache/wpFastestCache.php)
wp Hosting Performance Check (wp-hosting-performance-check/wp_host_check.php)
WP Mobile Detector (wp-mobile-detector/websitez-wp-mobile-detector.php)
WP Performance Pack (wp-performance-pack/wp-performance-pack.php)
WP Resized Image Quality (wp-resized-image-quality/wp-resized-image-quality.php)
WP Slimstat (wp-slimstat/wp-slimstat.php)
WP Smush.It (wp-smushit/wp-smushit.php)
WP Smushit (wp-smushit/wp-smush.php)
WP Super Cache (wp-super-cache/wp-cache.php)
WP fail2ban (mr_fail2ban/wp-fail2ban.php)
wp Time Machine (wp-time-machine/wp-time-machine.php)
WP-DB-Backup (wp-db-backup/wp-db-backup.php)
WP-DBManager (wp-dbmanager/wp-dbmanager.php)
WP-FFPC (wp-ffpc/wp-ffpc.php)
WordPress Popular Posts (wordpress-popular-posts/wordpress-popular-posts.php)
WordPress Varnish (wordpress-varnish/wp-varnish.php)
WordPress Varnish as a Service (wordpress-varnish-as-a-service/wordpress-varnish-as-a-service.php)
Wordfence Security (wordfence/wordfence.php)
XCloner - Backup and Restore (xcloner-backup-and-restore/xcloner.php)
Zen Cache (zencache/zencache.php)