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Kama SpamBlock

by Timur Kamaev · Security

Also makes 4 other plugins · 21.1K+ installs across the portfolio →

Light and invisible protection against basic automated comment spam. Pings and trackbacks check for real backlinks.

How scoring works →
89 Health · A
Maintenance 100/100
Rating quality 90/100
Support 70/100

89 health vs 64 average across 997 Security plugins

Directory ranking optimization

How it's scored →

How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.

94 / 100

Excellent listing optimization

Well tuned across the board

Update recency 100/100
WP compatibility 100/100
Rating quality 75/100
Listing tuning 100/100

Daily downloads

Since 2022-10-05 · 1,425 days · wp.org + Plugin Pulse archive

-58% vs prior 30d
33Downloads · Aug 26

30-day downloads

Rolling 30-day volume · peaks are release surges

1.1K

now · peak 3.1K

1K30d downloads · Aug 26

Directory rank vs rivals

wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you

Kama SpamBlock · #3303 you Spam protection, Hon · #240 Akismet Anti-spam: S · #8 hCaptcha for WP · #564

Update activity

How busy the existing users are, measured as downloads in the last 30 days for every 1,000 active sites. A spike means a new release everyone's pulling; a long, slow decline means an aging user base that updates less.

254per 1k installs · Aug 26

Release cadence

No release in a year
from wp.org release tags

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

0

releases in the last 12 months

1.9y ago

latest release · v1.8.3

5

tagged releases on record

Recent releases

1.8.3 · 1.9y ago1.8.2 · 2.8y ago1.7.2 · 9.5y ago1.7.0 · 9.5y ago1.5.1 · 11.8y ago

What its installed base runs

via wordpress.org

Share of active installs on each version of this plugin. Green is the current release; a big slice on older versions is a user base that has stopped updating.

v1.8 90%
v1.7 9.5%
v1.5 0.3%

Estimated active installs

The public count shows “4K+”. Our estimate pins where the real number sits.

tracked estimate
4K–5K ≈4.5K

Refined from the date this plugin crossed into its current band.

Install history · since 2015-09-24 · 1,427 observations

4KInstalls · Aug 26

Estimated value

What this plugin might earn a year, and what it might sell for. Modeled from public signals; we don't see anyone's books.

Est. annual revenue

N/A

Est. acquisition value

N/A

No paid tier is visible, so we don't put a figure on revenue or sale value: that would be guessing. The install base is a real asset to an acquirer, just not one public data lets us price. A small install base leaves thin data to model from. A declining trend compresses what a buyer would pay.

Details

Version
2.0.0
Last updated
1mo ago
Added
2014-11-05 · 11 yrs old
Requires WP
5.7
Tested up to
7.0.4
Requires PHP
7.4

Recent reviews

All reviews on wp.org ↗
  1. krivokoso
    6mo ago

    Безусловно лучшее решение для борьбы со спамом на сайте, но когда ждать обновления?

    Read on wp.org ↗
  2. Леонид
    2.8y ago

    Спасибо за плагин. Хорошо работает. Блокирует автоматический спам и пропускает нормальные комментарии.Thanks for the plugin. It works well. Blocks automatic spam and skips normal comments.

    Read on wp.org ↗
  3. Irina
    3.4y ago

    No spam for over 5 years.Thank you!

    Read on wp.org ↗
  4. Vladimir Kazakov
    5.5y ago

    En: On the themes-wordpress.ru site with zero visitors I have about 700 spam comments for a year of work, which Akismet marked as spam, they had to be opened and cleaned. This is a waste of time. It is better that spam comments do not appear at all. right now I use the kama-spamblock plugin and in a year and a half not a single spam comment! kama-spamblock is a very good plugin! Another advantage is that captcha does not annoys. no need to enter any numbers or click (like in Google recaptcha). Right now I want to repeat your success (take over the idea of captcha) for another CMS. everything is so great. Ru: за полтора года ни одного спамного коментария и капча не раздражает раньше у меня на сайте themes-wordpress.ru с нулевой посещалкой за год работы были штук 700 спамных коментариев, которые Akismet помечал как спамные, их надо было открывать и чистить. Это бессмысленная трата времени. Лучше чтобы спамные коментарии вообще не появлялись. щас я пользуюсь плагином kama-spamblock и за полтора года ни одного спамного коментария! kama-spamblock – очень хороший плагин! Ещё одно преимущество в том что капча не бесит. не требуется вводить никакие цифры или кликать (как в Гугл рекапча). Щас я хочу повторить ваш успех (перенять идею капчи) для другой CMS. настолько всё отлично.

    Read on wp.org ↗
  5. Nester
    6.3y ago

    Мне очень нравятся плагины, которые имеют минимум настроек и выполняют то что от них нужно без излишеств. Спасибо!

    Read on wp.org ↗
  6. Natalya
    7.0y ago

    Simple settings, and the result is excellent. Thank!

    Read on wp.org ↗
  7. sergeyua12
    7.3y ago

    Больше года не знаю, что такое спам-комментарии! Имел опыт с большими плагинами спам-коммент. – одни проблемы и заботы: то надо решить спам это или нет, а потом удалить спам. С этим плагинам “Kama SpamBlock” не чего делать не надо – просто нет спамов!!!

    Read on wp.org ↗
  8. elenavogni
    7.7y ago

    Меня замучили китайцы со своим бесконечным спамом. У меня стоял акисмет, который действительно отмечал его, как спам, но приходилось регулярно вычищать тонны спама. Но когда я поставила этот плагин, спам вообще перестал приходить! Насколько я поняла, плагин что-то такое делает, что для отправки сообщения нужно выполнить мышкой нажатие кнопки. А боты этого делать не могут. Я редко захожу оставлять комментарии, но тут не удержалась, хочется сказать спасибо автору. И еще, хотя, написано, что с моей версией вордпресс плагин не тестировался, он все равно работает.

    Read on wp.org ↗

Latest updates

via wp.org changelog

Recent releases and news for this plugin

  1. Version 1.9.0 IMP: Return a 403 response for blocked spam comments. FIX: Prevent malformed comment requests from causing PHP errors. FIX: Use a generated unique code immediately after plugin activation. FIX: Minor bugfix. CHG: Min PHP 1.9.0
  2. Version 1.8.3 FIX: XSS vulnerability fixed. Thanks to Wordfence for the report. IMP: Other minor improvements. 1.8.3
  3. Version 1.8.2 Minor refactoring. 1.8.2
  4. Version 1.8.1 Code refactoring. kama_spamblock__process_comment_types hook added. 1.8.1
  5. Version 1.8 FIX: WordPress 5.5 support. 1.8
  6. Version 1.7.5 FIX: bug with unique code comparison. Minor code fixes. 1.7.5

Known vulnerabilities

via Wordfence Intelligence

1 disclosed vulnerability on record for this plugin, fixed in the current version. Sites on older versions stay exposed until they update.

  1. 2024-10-15 CVE-2024-9647 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 1.8.2 Patched in 1.8.3

Vulnerability records provided by Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. License and terms.

CVE records: Copyright 1999-2026 The MITRE Corporation. CVE terms of use.

Behavioral tests

via WP Hive

Automated install-time checks, tested on PHP 8.1.12 · WP 6.6.2

Low memory footprint
Low page-speed impact
Runs on latest PHP + WP
No PHP errors
No JS errors
Activates cleanly
No resource errors
No external HTTP errors
Optimized database use
Frequently updated

Languages

via translate.wordpress.org

Translated into 3 languages, 2 at 90% or more

Russian 100%
Ukrainian 100%
Swedish 75%

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

  1. 2026-08-11 5K+ → 4K+ down after 464 days in tier
  2. 2025-05-04 6K+ → 5K+ down after 2 days in tier
  3. 2025-05-02 5K+ → 6K+ up after 1 days in tier
  4. 2025-05-01 6K+ → 5K+ down after 1 days in tier
  5. 2025-04-30 5K+ → 6K+ up after 1 days in tier
  6. 2025-04-29 6K+ → 5K+ down after 409 days in tier
  7. 2024-03-16 7K+ → 6K+ down after 19 days in tier
  8. 2024-02-26 6K+ → 7K+ up after 1 days in tier

Competes with

The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).

Compare head to head →

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Kama SpamBlock: 4K+ active installs, 5.0★ (17 reviews). Plugin Pulse (WP Mayor), as of 2026-08-30. https://plugins.wpmayor.com/plugin/kama-spamblock