By Timileyin Ilesanmi
A social-media post can travel further than a newspaper headline. A WhatsApp broadcast, X post, Facebook comment, LinkedIn update, TikTok video, or online review may expose its author to a defamation claim if it damages another person’s reputation.
The short answer is yes: you can be sued for something you posted online. Nigerian law does not treat digital communication as a lawless space. The same principles that govern newspaper libel apply to online publications, often with greater practical risk because a post can be shared, screenshot, and preserved indefinitely.
The central question is: when does an online statement become legally actionable defamation? The issue is not simply whether a statement is unpleasant, critical, or false. It is whether the statement, published to another person, lowers the claimant’s reputation in the eyes of right-thinking members of society.
Defamation may take the form of libel or slander. Online statements are usually treated as libel because they are made in permanent written, visual, or recorded form. A defamatory post may therefore attract civil liability, including damages, and in appropriate cases may also raise criminal-law concerns.
What the claimant must prove
Nigerian courts apply established principles to determine whether a publication is defamatory. In Sketch Publishing Co. Ltd. v. Ajagbemokeferi (1989) 1 NWLR (Pt. 100) 678, the Supreme Court explained that a defamatory statement is one which, if published of and concerning a person, is calculated to lower him in the estimation of right-thinking men or cause him to be shunned or avoided or to expose him to hatred, contempt or ridicule, or to convey an imputation on him disparaging or injurious to him in his office, profession, calling, trade or business.
The claimant must generally establish three elements. First, the statement must be defamatory. The court asks how a reasonable person would understand the words in their context, not merely what the author intended. A statement may be defamatory even without explicit insult, provided its natural and ordinary meaning, or an inferred meaning, damages reputation.
Second, the statement must refer to the claimant. The person need not be named. A post describing “the fraudulent lawyer in Lekki” or “the company director who diverted client funds” may be sufficient if people who know the claimant would reasonably understand that it refers to them. The Supreme Court reaffirmed the importance of identification in Abalaka v. Akinsete (2023) 13 NWLR (Pt. 1901) 343, holding that a statement must be reasonably capable of being understood as referring to the claimant.
Third, the statement must be published to at least one person other than the claimant. Publication is central in the digital environment. Sending a private message directly to the person concerned may not amount to publication, but posting the same allegation in a group chat, on a public page, or in a comment visible to followers almost certainly does. Every share, repost, or onward transmission may extend the publication.
Why online posts are risky
The internet changes the scale of publication. A statement made to one person in a private conversation may remain private; the same statement uploaded online may reach thousands within minutes. In defamation law, wider publication can increase both the seriousness of the claim and the damages recoverable.
Screenshots also create evidentiary challenges. A deleted post does not necessarily erase liability. Under section 84 of the Evidence Act 2011, electronic records generated by computers may be admissible where the statutory conditions are satisfied. Courts can therefore receive evidence of posts, messages, metadata, and downloaded or preserved digital content, subject to questions of authenticity and reliability.
The practical lesson is that deletion may stop further publication, but it does not automatically undo the earlier publication or the reputational harm caused.
Defences are available
Not every damaging statement is unlawful. Truth or justification is a complete defence where the defendant proves that the imputation is substantially true. Fair comment protects honest opinions on matters of public interest, provided the comment is based on true facts and is recognisably opinion rather than a false assertion of fact. The distinction matters: saying “in my view, this business handled the transaction poorly” may be protected comment, while alleging “this business stole my money” without proof is a factual accusation.
Qualified privilege may protect statements made in circumstances where there is a legal, social, or moral duty to communicate and a corresponding interest to receive the information. However, privilege can be defeated by malice. Other defences include consent, innocent dissemination in limited circumstances, and statutory privileges for certain official or judicial communications.
A claimant must also act within the limitation period. In Lagos State, an action for libel or slander must generally be brought within three years, under the Limitation Law of Lagos State 2015. Delay may therefore defeat an otherwise valid claim.
Criminal exposure
Online publications may also attract criminal liability. Section 24 of the Cybercrimes (Prohibition, Prevention, etc.) Act 2015 originally criminalised the sending of false messages online for purposes including causing annoyance, insult, ill will, or needless anxiety. Following the ECOWAS Court’s decision in Incorporated Trustees of Paradigm Initiative for Information Technology Development v. Attorney-General of the Federation (2022), which found the original provision incompatible with freedom-of-expression guarantees, Nigeria amended the provision in 2024. The amended provision now focuses more narrowly on false messages sent to cause a breakdown of law and order or pose a threat to life.
That development does not make online speech consequence-free. A person who knowingly publishes false and damaging allegations may still face a civil defamation action, and certain publications may attract prosecution under other provisions of the Cybercrimes Act or general criminal law.
Practical guidance
Before posting about a person, business, transaction, or public controversy, ask whether the statement is factually accurate, whether you can substantiate it, whether it is genuinely opinion rather than an unproven allegation, and whether the public interest justifies its publication. Avoid forwarding unverified accusations, screenshots, voice notes, or “breaking news” simply because they are circulating.
If you believe you have been defamed online, preserve the post, its URL, screenshots, dates, shares, and any evidence of reputational or financial harm. Seek legal advice promptly before responding publicly, because an emotional reply can create further publication and complicate the claim.
Freedom of expression is protected, but it is not a licence to destroy reputations. In the digital age, the safest rule remains simple: publish what you can prove, and distinguish clearly between verified fact and personal opinion.