I have been building WordPress plugins for over a decade. We have around 100 of them at Wbcom Designs. That means ten years of support tickets, changelog maintenance, compatibility updates, one-star reviews from people who rated the wrong plugin, and the slow, grinding work of building an install base one user at a time.

Turns out I was doing it wrong.

The real move, the genius shortcut I somehow missed, is to let someone else do all that work for five or ten years, then buy their plugin for a fraction of what it cost to build, and immediately start using their user base as a captive audience for whatever product you actually wanted to sell. Why build trust from scratch when you can just purchase it? The existing users come with the listing. The auto-update system delivers your code to their sites. The reviews and install count stay on the WordPress.org page. It is practically a full-service growth channel with someone else paying for the setup.

This post is about the people who figured this out, and what happened next.

The Acquisition Playbook

Here is how the math looks to a buyer. WordPress.org hosts over 60,000 free plugins. Most of them are maintained by one or two developers who built something useful, grew it slowly, and eventually got tired. The support queue never empties. The revenue plateaus. Life happens. Some of those developers list their plugins for sale.

Prices range from $15,000 for a mid-tier utility plugin with decent installs, to six figures for something with a large active install count and a paid add-on business attached. When you buy it, you get the codebase and the WordPress.org commit access. You also get something nobody puts in the listing price but everybody is clearly buying: the auto-update channel.

Every site that has installed the plugin will receive your future updates silently and automatically. No acquisition funnel. No conversion rate optimization. No ad spend. A user who installed the plugin two years ago and forgot about it will now run your code the next time their site refreshes its plugin list. That user has zero awareness anything changed hands. They trust the plugin. They trusted the original author. For the purposes of the auto-update system, that trust transfers with the commit access.

WordPress.org has no mechanism to flag ownership changes. No notification goes out to installed users. No review is triggered when a new author pushes the first commit under a newly acquired account. The auto-update system was built to keep plugins secure and patched. It does that job well. It also happens to be a perfect distribution channel for whatever the new owner decides to ship.

What do new owners tend to ship? Let me walk you through a few case studies. I am going to call them masterclasses because that seems to be the spirit in which they were conceived.

Masterclass #1: The Gentle Pivot (WP User Avatar)

WP User Avatar was one of those quietly dependable plugins that does exactly one thing and does it well. It let WordPress users replace the default Gravatar with a locally hosted profile photo. Upload a photo. Use it as your avatar. Complete feature list. It had about 400,000 active installs and a 4.4-star rating, both of which represent years of accumulated user trust in something small and reliable.

In April 2020, ProfilePress acquired it. ProfilePress was a premium membership and user registration plugin. A commercial product that needed distribution. WP User Avatar had 400,000 trusting installs and a WordPress.org listing with a long history of positive reviews. The match seemed obvious to someone.

The first year after acquisition was uneventful by design. The plugin kept working. Nobody said anything publicly. Users updated as normal. Nothing triggered any alarm. This was the patient phase.

Then in May 2021, a major update shipped. The plugin renamed itself ProfilePress. The avatar functionality remained, buried inside a full membership and user registration platform. New admin menus. New settings pages. Pricing tiers for premium features. Everything the original plugin was not, delivered silently to 400,000 sites as a routine update.

Users opened their dashboards to find their avatar plugin had become membership software. No announcement before the change. No email. No opt-in. Just a changelog entry and a completely different product where the old one used to be.

The WordPress.org review section documented the reaction: 60-plus one-star reviews in 48 hours. The rating collapsed from 4.4 to 3.0. Comments ranged from frustrated to genuinely baffled. Some users were angry at the bloat. Some were upset at the absence of any communication. Some just wanted their simple avatar plugin back and had no interest in a membership platform they had not asked for and did not need.

ProfilePress got 400,000 installs for the price of one acquisition. The users got a product they never chose. A genuinely elegant transaction, from one angle.

Masterclass #2: The Framework Takeover (Kirki)

Kirki is a different story because the people affected were not regular WordPress site owners. They were WordPress theme developers who had built production themes around Kirki as a dependency. That distinction matters for understanding how bad the fallout got.

Aristath created Kirki in 2014 as a utility framework for the WordPress Customizer. It gave theme developers a clean API for registering customizer controls without writing the same boilerplate over and over. It grew to 500,000-plus active installs almost entirely because commercial and free themes bundled it as a backend dependency. When you installed a theme that used Kirki, you got Kirki. Most site owners had no idea what it was or why it was there. To them, it was invisible infrastructure.

The plugin changed hands in 2020, then again in 2023 when Themeum acquired it. Themeum is a WordPress company that had been developing a commercial visual page builder called Droip. Droip needed users. Kirki had 500,000 installs.

Kirki 6.0.0 shipped in 2024 with a new identity: “Freeform Website Builder.” Themeum had merged Droip’s frontend visual builder functionality into Kirki’s codebase. A quiet developer framework that theme authors had used as stable backend infrastructure was now a page builder product aimed at end users who want to build pages visually. These are not overlapping audiences. They barely share a use case.

The downstream consequences were specific and immediate. We spent a week on this at Wbcom Designs after Kirki 6.0.1 started crashing sites running BuddyPress and BP Profile Search. The new codebase called wp_insert_post() during the plugins_loaded hook, which triggered a BuddyPress cache-clearing chain that eventually called get_page_link() while $wp_rewrite was still null. Fatal error. Sites with both plugins running went down. We shipped an mu-plugin fix as an emergency advisory to our customers. The underlying cause: Kirki 6.x has a fundamentally different boot sequence than the framework developers had depended on for eight years, and nobody warned anyone that the framework was gone and a page builder had taken its place.

The WordPress.org reviews for Kirki from late April 2026 are written with developer precision. “Bloated junk.” “Broke multiple sites.” These are not users who expected something simple and got something complicated. These are developers who built production themes on top of a stable API, and that API was silently replaced by a commercial product for an entirely different market.

I can speak to this one directly. We have around 10,000 customers using BuddyX, BuddyX Pro, and Reign Theme. All three themes used Kirki for exactly one purpose: customizer controls. Color pickers. Typography selectors. Range sliders. Toggle switches. That is the complete use case. Not one of those customers installed a page builder. Not one of them asked for one. They are all running one now, because Kirki 6.x ships Droip as part of itself and there is no way to opt out.

We used Kirki because it made registering Customizer controls clean and consistent across our theme lineup. We could have written native WP_Customize_Control classes for everything and the result would have been identical from the customer’s perspective. We used Kirki because it was a reliable, stable, widely trusted utility. The word “was” is doing a lot of work in that sentence now.

Our customers did not get a page builder because they wanted one. They got a page builder because Themeum needed 500,000 install points for Droip, and the quickest way to get them was to merge Droip into a dependency that half a million sites were already running. Congratulations to our customers on their complimentary visual editor. We hope it was worth the fatal error.

Themeum now has 500,000 distribution points for their visual builder. Strategic.

Masterclass #3: The Honest Version of the Same Playbook (Essential Plugin)

The first two cases used the acquisition strategy for commercial gain. The third used it for something more straightforward.

Essential Plugin was a portfolio of 30-plus WordPress utility plugins built over about a decade by a company called WP Online Support. Countdown Timer Ultimate. Popup Anything on Click. WP Testimonial. Post Grid and Filter Ultimate. Around two dozen more. Standard utility plugins, each with a user base built through years of maintenance. In late 2024, as revenue dropped 35 to 45 percent, the founder listed the business on Flippa.

A buyer with a background in SEO, crypto, and gambling marketing acquired the entire portfolio for six figures in early 2025 and registered a new WordPress.org account in May 2025.

For eight months, nothing unusual shipped. Updates trickled through as normal. The patient phase.

On August 8, 2025, version 2.6.7 deployed across the portfolio. The changelog said: “Check compatibility with WordPress version 6.8.2.” A routine note. Inside the existing wpos-analytics module, which had legitimately handled opt-in analytics for years and would raise no flags in any quick review, was a backdoor.

The backdoor used PHP deserialization via unserialize(), an unauthenticated REST API endpoint with no permission checks, and remote function execution controlled by a command-and-control server. The C2 server address resolved through Ethereum smart contracts, specifically to make DNS-based takedowns ineffective. Genuinely creative engineering applied to genuinely harmful ends.

Then eight more months of nothing. The backdoor sat dormant on hundreds of thousands of WordPress sites. Waiting.

On April 5 and 6, 2026, it activated. Sites running the affected plugins began serving hidden SEO spam: fake links, ghost pages, redirects. Invisible to site owners. Visible to search engine crawlers. The kind of manipulation that erodes domain authority silently over months before anyone identifies the source.

Researcher Austin Ginder found it through backup forensics, binary-searching across eight snapshots to narrow the injection window to six hours and 44 minutes on April 6. The wp-config.php file had grown by approximately 6KB. WordPress.org closed all 31 Essential Plugin listings on April 7 and forced a clean auto-update on April 8.

Ginder made an observation that deserves to be read carefully: “WordPress.org has no mechanism to flag or review plugin ownership transfers. There is no change-of-control notification to users.” This was also true in 2017 when someone bought Display Widgets, 200,000 installs, for $15,000 and immediately injected payday loan spam. That was nine years ago. The infrastructure is unchanged. The opportunity is unchanged.

You are not buying 500,000 installs. You are borrowing 500,000 trust relationships. The moment you break them, the math stops working in your favor.
You are not buying 500,000 installs. You are borrowing 500,000 trust relationships. The moment you break them, the math stops working in your favor.

Why the Auto-Update System Is the Center of All of This

WordPress auto-updates are a genuine security feature and they work. For most plugin updates, they protect sites from known vulnerabilities faster than any manual review process could. I use them. The problem is not auto-updates. The problem is what auto-updates are built on: trust in the plugin author.

When a user installs a plugin, they are making a trust decision about the author, not just about the plugin itself. That trust is what makes auto-updates safe in practice: users know who is publishing the updates. What the acquisition playbook exploits is that this trust does not expire and does not recheck when the author changes. It persists from the moment of install and then operates silently, indefinitely.

When I update one of our plugins, it reaches our users because they trusted us when they installed it. If I sold that plugin tomorrow and the new owner published an update next month, every user would receive it with the same confidence they have in our updates. No notification goes out about the author change. The trust placed in us transfers automatically to whoever holds the commit access next.

WordPress.org’s code review is strongest for new plugins from new authors. Established plugins with long histories and trusted accounts attract less scrutiny. The system was not designed around the scenario where a plugin with a clean decade-long record is acquired and then gradually weaponized. It has no good answer for that. Nine years after Display Widgets proved the concept, it still does not. The gap remains open, and the price of a Flippa listing continues to be all the barrier that exists between a trusted plugin and whatever the next buyer decides to ship through it.

What Actually Works If You Are Buying to Build

Acquiring an existing plugin is not inherently wrong. It is a real way to enter a market, and some acquisitions in the WordPress space have been handled well. The new owner maintained the core use case, communicated changes in advance, and earned the user base before asking anything of it. Those acquisitions tend not to appear in blog posts like this one, because nothing dramatic happened.

The distinction that matters: you are not buying 500,000 installs. You are borrowing 500,000 trust relationships, each conditional on you continuing to behave like whoever established the relationship in the first place. Break that condition at scale and you find out quickly how many of those installs were actually yours.

ProfilePress discovered this when 60 one-star reviews landed in two days and a 4.4-star rating became a 3.0. Kirki’s developer community, once one of the most active in the customizer space, is gone. The Essential Plugin portfolio was wiped from WordPress.org in 24 hours after a decade of work by the original team. The math at acquisition time did not survive contact with the users.

The version that works over a full product cycle is slower. Buy the plugin. Maintain it properly. Earn the user base by showing up consistently for them. Then introduce your actual product to an audience that trusts you because you kept your end of the deal for two or three years. That is how an acquisition becomes a real distribution advantage, instead of a one-time withdrawal from someone else’s trust account.

The practical difference between an ethical acquisition and an exploitative one is not really about intent. It is about sequence. The question is whether the new owner is willing to invest in the relationship before extracting from it. Most of the cases above failed because the extraction happened first, or immediately, or at the point of maximum possible surprise. Users who have been using a simple avatar plugin for three years do not expect to open their WordPress dashboard and find membership software. That gap between expectation and reality is where the trust burns.

There is a version of this that I could imagine doing at Wbcom Designs. If we acquired an existing plugin rather than building one from scratch, the first thing I would write is a public announcement to existing users explaining who we are, what we build, and what our intentions are. Not a changelog entry. An actual communication. Then I would spend a full year just maintaining and improving the existing feature set, with no additions, no pivots, no premium upsells. The audience would learn to associate our name with reliability before they ever saw a pitch from us. That costs time. It is also the only version of this that does not eventually produce a wall of one-star reviews.

What to Check Before Your Next Plugin Auto-Update Goes Through

If you run a WordPress site in production, some practical steps are worth taking now.

  • Check author history on plugins you depend on. Every WordPress.org listing shows active contributors. If you see a contributor change in the last 12 to 18 months on a plugin you have been running for years, look at the commit log. Compare the pace and nature of updates before and after the change. A new author committing aggressively after a quiet multi-year history is worth investigating.
  • Read changelogs before major version bumps. “Check compatibility with WordPress version X.Y” as the only entry for a major version is a warning sign. Meaningful updates have meaningful changelogs. Vague entries on significant version numbers deserve a pause before updating.
  • Monitor your wp-config.php file size. This file should be nearly static once your site is configured. If it grows by several kilobytes after a plugin update, something wrote to it. A simple cron job logging the file size would catch the Essential Plugin payload pattern. The injected code added about 6KB. Detectable if you are watching.
  • Stage auto-updates for business-critical plugins. For supplementary plugins, auto-updates are fine. For plugins deeply integrated into your site’s core function, letting updates sit on staging for 48 to 72 hours before applying to production catches problems and community discussion before they reach your live site.
  • Check WordPress.org reviews after major version updates. The review section is the fastest early warning system the ecosystem has. When a plugin gets 15 one-star reviews in 48 hours, something changed. Sort by Newest, scan the last week. If the tone shifted dramatically after a specific version number, that version is your signal.
  • Notice behavioral changes after updates. New admin menu items. Settings pages that multiplied. Unusual HTTP requests in server logs. Performance shifts. Not always signs of something wrong, but easy to miss when updates go through silently at 3am.

None of this is a complete defense. The Essential Plugin backdoor sat dormant for eight months before activating. A careful site owner doing all of the above would still have installed version 2.6.7 in August 2025 without finding anything unusual. The structural problem is that WordPress.org still has no change-of-control review process, and until it does, the trust the auto-update system relies on has a gap anyone can step through for the price of a Flippa listing.

Until then: read the changelog. Check who is actually maintaining the plugins your site runs on. Know what is in your wp-config.php.

And if you are thinking about acquiring a WordPress plugin as your growth strategy, the users you are inheriting did not sign up for you. They signed up for the person who answered support tickets for five years before you handed over the check. Treat that accordingly and you might actually keep them. The alternative is well documented above.

The WordPress plugin ecosystem is built on an unusual kind of trust. Users install software from strangers and give it unrestricted access to their databases, their files, and their admin interfaces. That trust exists because the ecosystem has, on balance, earned it over many years. Every acquisition that exploits that trust makes it slightly harder for the next plugin author to earn it from scratch. The cost is distributed across everyone who builds here. The profit goes to whoever cashed out on Flippa.