Worldwide list of DDoS attacks that took place during the month of April 2021
| Date of attack | Country | Industry | Downtime | Company Affected | Size of Company | Attack Details | Press Link |
| Apr 26 | Japan | Gaming | 1 Month | Sony Computer Entertainment | Enterprise | The game LittleBigPlanet has been down for over a month with no fix in sight. | Click here |
| Apr 9 | Russia | Media | 2 Days | Proekt | Small | Proekt has been subjected to DDoS attacks linked to the recent publication of an investigation into real estate. | Click here |
| Apr 4 | UK | Education | Several Months | Bradford Learning Network (BLN) | Medium | Continuous outages have caused chaos in lessons and heightened stress levels for faculty and students. | Click here |
| Apr 2 | USA | Gaming | 3 hours | Respawn Entertainment | Medium | Popular games Titanfall 1 and 2 Titanfall 2 servers experienced downtime preventing players from accessing the games. | Click here |
| Apr 1 | USA | Technology | 3 hours | Microsoft Cloud Services | Enterprise | Microsoft’s entire cloud service offerings suffered an outage caused by a DNS DDoS attack. | Click here |
