r/cybersecurity for B2B sellers
1,539,907 members · rules and posts checked 17 October 2026
r/cybersecurity is a large community for cybersecurity professionals, with about 1,539,907 members. Sellers can take part, but promotion is tightly restricted, and marketing-style outreach can get you banned.
People here sometimes ask for recommendations and evaluations before they buy. Recent requests have covered security software comparisons, security training, large language models for security work, hardware security keys, research tools and cybersecurity career resources.
Self-promotion: allowed with limits
Advertising and self-promotion are heavily restricted. Promotional content is only allowed within specific limits, including a maximum self-promotion ratio and frequency cap, and some content must be labeled appropriately. Attempts to move discussions into DMs or calls for marketing purposes may result in a ban.
1Read the FAQ before posting
Read the FAQ first; questions already answered there may be removed.
2Must be relevant to cybersecurity professionals
Posts must be relevant to cybersecurity professionals and not personal tech-support topics.
3No low effort / poor quality posts
Low-effort, AI-generated, SEO-farmed, or copied content is not allowed.
4Security first / no editorializing
Keep posts focused on security implications, not political or editorial agendas.
5No advertising
Advertising is restricted and marketing-style outreach can lead to a ban.
6No excessive promotion
Self-promotion must stay under 10% of your activity and no more than once per week per entity.
7No personally-identifiable information.
Do not post, request, or gate content behind personally identifiable information.
8Civility
Be civil and professional.
9Ongoing security incidents are to be collated into one thread
Major ongoing incidents must be discussed in designated megathreads when required.
Summarised from the community's posted rules on 17 October 2026. Moderators change rules; read the current rules before you post.
What buyers ask for here
Sample requests from public posts, paraphrased and anonymised, found 17 October 2026.
- “Looking for recommendations on hardware security keys that are cheaper alternatives to a well-known brand.”
- “Seeking one-on-one tutoring to help with an offensive-security certification and AI penetration-testing exercises.”
- “Journalist looking for software related to command-and-control bot infrastructure for research and explanation purposes.”
- “Evaluating whether to replace one application-security testing platform with another before a renewal deadline.”
- “Looking for feedback on a web-application security course and recommendations for AI-focused blue-team training.”
- “Seeking recommendations for the best large language model for vulnerability testing and incident investigation work.”
- “Looking for effective job boards to find cybersecurity management roles after a layoff.”
Of 184 recent posts we checked, 4% read as someone looking to buy or hire. How we collect this
Who it suits
Good for
- Cybersecurity software vendors
- Threat intelligence providers
- Security training and certification providers
- Enterprise security research and compliance services
Less useful for
- General consumer products
- Home IT support services
- Broad non-cyber B2B offerings
How to take part without getting removed
- Read the FAQ before posting. Questions it already answers may be removed.
- Keep contributions relevant to cybersecurity professionals. Personal tech-support questions don't belong here.
- Avoid low-effort, copied, SEO-focused or AI-generated content.
- Stick to the security implications and leave out political or editorial angles.
- Do not use advertising or marketing-style outreach.
- Keep self-promotion limited, infrequent and within the community's promotion limits, and stay civil and professional.
What a good reply looks like here
A good reply is professional, answers the question directly and sticks to practical security considerations instead of promotion. Offer useful evaluation criteria and don't push a product.
Sample reply: If you're comparing hardware security keys as lower-cost alternatives, it may help to check support for the authentication standards you need, compatibility with your devices and identity providers, management requirements, and total deployment cost. For teams, reliability, replacement processes and user onboarding can matter as much as the purchase price. If you share your environment and requirements, people may be able to suggest options that fit them.
When to skip r/cybersecurity
If you sell general consumer products, home IT support services or broad non-cyber B2B offerings, this community usually isn't worth prioritizing. It suits cybersecurity-focused vendors and service providers who can contribute expertise without leaning on promotional outreach.
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