Suggest an editImprove this articleRefine the answer for “What types of network attacks are there?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)Network attacks are grouped by which security property they violate: **availability (DoS/DDoS), confidentiality (data interception), integrity (data tampering), authentication (credential guessing)**, plus attacks on network services, insider attacks and social engineering. **Key point:** a convenient interview classification is attacks on availability, confidentiality, integrity, authentication and insider attacks.Shown above the full answer for quick recall.Answer (EN)Image## Main types of network attacks ### 1. Attacks on availability (DoS / DDoS) **Goal:** make a service or network **unavailable**. **How it works:** the attacker overloads the server with a large number of requests. **Examples:** - DoS (a single source) - DDoS (many sources) Violates: **Availability** --- ### 2. Attacks on data interception **Goal:** covertly **obtain information** transmitted over the network. **How it works:** the attacker "listens" to network traffic. **Examples:** - Sniffing (traffic eavesdropping) - Man-in-the-Middle (MITM) Violates: **Confidentiality** --- ### 3. Data tampering attacks **Goal:** **change or forge** data on the network. **Examples:** - ARP spoofing - IP spoofing - DNS spoofing Violates: **Integrity** --- ### 4. Attacks on authentication **Goal:** obtain **someone else's credentials**. **Examples:** - Brute force (password guessing) - Password spraying - Credential stuffing Weak password policy is often the cause. --- ### 5. Attacks on network services **Goal:** exploit **vulnerabilities in services and protocols**. **Examples:** - attacks on open ports; - exploiting server vulnerabilities; - attacks on FTP, SSH, HTTP and others. --- ### 6. Insider attacks **Goal:** abuse of **legitimate access**. **Who attacks:** - employees; - contractors; - compromised accounts. Dangerous because the traffic looks "legitimate." --- ### 7. Social engineering (network-related) **Goal:** deceive the user, not the system. **Examples:** - phishing; - fake websites; - malicious emails with links. Often used as an entry point for network attacks. --- ## A handy classification to remember For the interview, you can say it this way: - attacks on **availability**; - attacks on **confidentiality**; - attacks on **integrity**; - attacks on **authentication**; - **insider attacks**.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.