Diplomacy and hybrid war. Heightened cyber tension as Quds Day approaches. Conti in Costa Rica. North Korean cyber operators target journalists. C2C notes.. A guilty plea in a cyberstalking case.

Cybersecurity experts are on high alert as tensions rise with the approaching Quds Day, amid concerns of potential cyber attacks. Costa Rican electrical utility has been targeted by Conti ransomware, causing system disruptions. Emotet's operators are exploring new delivery techniques, suggesting a shift in their tactics. North Korean cyber operators have been targeting journalists who cover the DPRK, using novel malware. A former eBay executive has pleaded guilty to his role in a cyberstalking campaign against a couple whose newsletter raised his ire. Cybercrime is increasingly being run like a business, with criminals offering malware for free. The ongoing conflict in Ukraine has raised fears of a potential nuclear war, with Russia warning of the risks. Finland and Sweden are set to begin their NATO application process in May, according to local media reports. The US has invited 14 non-NATO nations to a Ukraine defense summit. Iran claims to have foiled cyberattacks on public services, but no proof has been provided.