Spammers have been programmatically creating accounts on Mastodon instances for years. Sometimes they post once and never again, sometimes they post on a schedule. Sometimes they never post, like a waiting botnet.

As Mastodon's anti-spam solutions are effectively nonexistent, most instances in our network require manual approval of new accounts. Up until recently, it was easy to spot a spammer; their join reasons were generic.

ChatGPT spammers have now arrived.

#MastoAdmin#FediAdmin #spam

A screenshot from a Mastodon User Moderation screen, showing suspended user @citycaptures' single spam post. Image text follows.

Rising Demand for Pre-Engineered Buildings in Commercial & Infrastructure Sectors
Pre-Engineered Buildings (PEBs) are modern, cost-effective structures designed and fabricated using standardized materials and construction methods.
These buildings are tailored to meet specific design requirements, offering advantages like faster construction, lower costs, and structural efficiency

Get Info - marketresearchfuture.com/repor...

Web - July 10, 2025 at 10:59pm (globe icon) Public - View Publicly
A screenshot from a Mastodon User Moderation screen, showing suspended user @citycaptures' single spam post. Image text follows. Rising Demand for Pre-Engineered Buildings in Commercial & Infrastructure Sectors Pre-Engineered Buildings (PEBs) are modern, cost-effective structures designed and fabricated using standardized materials and construction methods. These buildings are tailored to meet specific design requirements, offering advantages like faster construction, lower costs, and structural efficiency Get Info - marketresearchfuture.com/repor... Web - July 10, 2025 at 10:59pm (globe icon) Public - View Publicly
A screenshot from a Mastodon User Moderation screen, showing suspended user @citycaptures' reasons for joining. Image text follows.

Hi! I'm interested in joining plush.city to connect with others who share my love for plushies and cozy communities. | enjoy collecting, crafting, or just
appreciating soft things, and I'd love to share photos, discuss favorites, and participate in friendly discussions. I'll respect the community guidelines—thanks for considering my application

@citycaptures Reasons for joining
A screenshot from a Mastodon User Moderation screen, showing suspended user @citycaptures' reasons for joining. Image text follows. Hi! I'm interested in joining plush.city to connect with others who share my love for plushies and cozy communities. | enjoy collecting, crafting, or just appreciating soft things, and I'd love to share photos, discuss favorites, and participate in friendly discussions. I'll respect the community guidelines—thanks for considering my application @citycaptures Reasons for joining
A screenshot from a Mastodon User Moderation screen, showing suspended user @iamtile's spam post. Image text follows.

Gene Therapy's Secret Weapon: Why the Viral Vector Manufacturing Market is Set to Skyrocket
In the fast-evolving world of biotechnology, microcarriers—those tiny, bead-like structures used for cell cultivation—are quietly transforming the future of medicine. From regenerative therapies to vaccine production, these microscopic marvels are gaining unprecedented traction. The global Microcarriers Market is expected to witness significant growth

Get more info @ marketresearchfuture.com/repor...

Microcarriers Market 
A bar chart image showing exponential market growth over time, would you believe it.
A screenshot from a Mastodon User Moderation screen, showing suspended user @iamtile's spam post. Image text follows. Gene Therapy's Secret Weapon: Why the Viral Vector Manufacturing Market is Set to Skyrocket In the fast-evolving world of biotechnology, microcarriers—those tiny, bead-like structures used for cell cultivation—are quietly transforming the future of medicine. From regenerative therapies to vaccine production, these microscopic marvels are gaining unprecedented traction. The global Microcarriers Market is expected to witness significant growth Get more info @ marketresearchfuture.com/repor... Microcarriers Market A bar chart image showing exponential market growth over time, would you believe it.
A screenshot from a Mastodon User Moderation screen, showing suspended user @iamtile's reasons for joining. Image text follows.

I'm drawn to cozy, inclusive online spaces and enjoy connecting with kind, creative people. I'd love to join plush.city to share gentle vibes, engage in wholesome conversations, and be part of a warm, supportive community.

@iamtile Reasons for joining
A screenshot from a Mastodon User Moderation screen, showing suspended user @iamtile's reasons for joining. Image text follows. I'm drawn to cozy, inclusive online spaces and enjoy connecting with kind, creative people. I'd love to join plush.city to share gentle vibes, engage in wholesome conversations, and be part of a warm, supportive community. @iamtile Reasons for joining
@mawr I wonder what would happen if you put a hidden form that is hidden from humans (as in, markup-wise, no human using a browser can see it) but the robot can see it.

Long ago when I ran a forum, doing this would result in the robot filling in the form that is invisible to normal people, and that would let me figure it out no matter what they did, so, even with hyper-advanced future technology, if they made that mistake today it'd ruin their attempt even today.