Hasbro, the entertainment and toy enterprise, has been hit by a cyber-attack, affecting some of its online systems and potentially delaying product deliveries.

The firm, which owns major brands like Monopoly and Peppa Pig, said that it had “identified unauthorised access to the Company’s network,” in a US government filing of the cyber-attack.

Some of the company’s websites and those of its brands showed error messages as a result of the attack.

According to Hasbro’s filings, the firm became aware of the breach on 28 March. Details currently remain unclear – it is not known if the threat actors are still in the firm’s systems, if customer data has been compromised, or if the threat actors have made any contact with Hasbro.

The firm said that it was continuing to “implement measures to secure its business operations,” which leaves many unknowns as to if the hackers are still in the company’s systems or if Hasbro understands the full scale of the attack.

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The firm said in its filing that it has taken measures to ensure orders can continue to be taken and shipped, but these could result in delays and be necessary for “several weeks”.

The recent attack comes about a year after a round of cyber-attacks hitting UK retail including M&S, Co-op, and Harrods.