Mirai Attack

Mirai attack is a malicious software (malware) attack that targets Internet of Things (IoT) devices and converts them into a remotely controllable botnet network. First brought to public attention in 2016, Mirai specifically infected IoT devices with weak passwords and inadequate security measures, orchestrating large-scale distributed denial-of-service (DDoS) attacks.

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The Mirai malware caused massive cyberattacks worldwide and triggered significant disruptions to internet infrastructure. It targeted IoT components such as IP cameras, routers, and DVR devices. One of the most well-known incidents was the 2016 attack on the Dyn DNS infrastructure, which rendered many popular internet services—including Twitter, Spotify, Netflix, and GitHub—unavailable for hours.

The Mirai malware scans IoT devices with simple and weak passwords, compromising them using default username and password combinations. Compromised devices:

1. Connect to a command-and-control (C&C) server.
2. Are incorporated into a “botnet” network managed by the C&C server.
3. Are directed by the botnet to launch DDoS attacks against specific targets.

Such attacks overwhelm the target system’s server resources, rendering its services inaccessible.

DDoS (Distributed Denial-of-Service) attacks rely on flooding a target with traffic from multiple sources to render it inoperable. Mirai’s danger lies in its ability to turn millions of devices into attack sources simultaneously. This has made defense against such attacks significantly more difficult and has established IoT security as one of the primary centers of cyber threats.

• Despite widespread use, most IoT devices suffer from weak security standards.
• Default usernames and passwords provide an easy entry point for malware like Mirai.
• This incident has highlighted the necessity for IoT device manufacturers to adopt security-focused hardware and software development.