Best Website Security Software

Sucuri is a website security company offering a cloud-based platform that combines a web application firewall, malware scanning, and unlimited malware removal. It protects WordPress, Joomla, Drupal, Magento, and other CMS platforms against hacks, DDoS attacks, blacklisting, and defacement, while a global CDN accelerates site performance.

Plans are billed annually and scale by scan frequency and response time, from a Basic tier with 12-hour scans up to a Business tier with 30-minute scans and faster support. A separate monthly Firewall-only plan is available for site owners who just need WAF and DDoS protection without the full remediation service.

Cloudflare operates a global network that provides content delivery, DNS, DDoS mitigation, and a web application firewall to protect and speed up websites and applications. It runs the public 1.1.1.1 DNS resolver and offers unmetered DDoS protection, SSL/TLS encryption, and bot management on every plan, including the free tier.

Beyond its core website plans, Cloudflare sells a large catalog of usage-priced developer products such as Workers, R2 storage, and Zero Trust network access. Paid plans add performance features, compliance reporting, and uptime SLAs, scaling from small sites to large enterprises with custom contracts.

Quttera is an Israel-based cybersecurity company specializing in website malware detection through its patented, non-signature heuristic engine. Its ThreatSign platform scans for malicious PHP, obfuscated JavaScript, hidden iframes, redirects, SEO spam, and payment card skimmers, and can monitor and remove sites from search engine and security blacklists.

Higher ThreatSign tiers add a web application firewall with virtual patching, faster scan intervals and response times, and full cleanup of existing infections rather than just prevention of future ones. Quttera also sells a separate Malware Scanner API, priced by monthly scan volume, aimed at hosting companies, marketplaces, and other businesses that need to embed malware detection into their own products, with compliance mapping for SOC 2, PCI DSS, and ISO 27001.

Qualys provides a cloud-based security and compliance platform built around Vulnerability Management, Detection and Response (VMDR), which discovers assets, scans for vulnerabilities, prioritizes risk with its TruRisk scoring, and automates patching. Additional apps cover web application scanning, cloud security posture management, container security, and endpoint detection.

Qualys does not publish fixed prices; customers select from a modular set of Cloud Platform Apps and are quoted based on the number of assets, web applications, and user licenses required. It offers a free trial and targets mid-size to large enterprises with complex, hybrid IT environments.

Jetpack Security is a WordPress security bundle from Automattic that combines a web application firewall, automated malware scanning, real-time cloud backups, and comment/form spam protection into a single plugin. The firewall is continuously updated against emerging threats, while the scanner checks plugins, themes, uploads, and select core files for known vulnerabilities and malicious code.

The Security plan bundles VaultPress Backup with 10GB of storage and one-click restores, Jetpack Scan, and Akismet Anti-spam with 10,000 API calls per month. A broader Complete plan adds performance and growth tools on top of the same security features. A free Jetpack tier exists with basic protections like downtime monitoring and brute-force blocking, but full backup and scanning require a paid plan.

Intruder is a UK-based vulnerability management platform built for lean security and IT teams that lack a dedicated in-house security function. It continuously scans an organization's external attack surface, cloud accounts (AWS, Azure, Google Cloud), and internal networks using more than 140,000 security checks, and runs emerging threat scans within hours of new vulnerabilities appearing in the wild.

Findings are prioritized by exploitability and explained through GregAI, Intruder's built-in AI analyst, cutting through noise so teams can focus on what matters. Intruder offers a free tier for very small setups, paid Cloud and Pro plans with published starting prices, a custom Enterprise tier, and an optional AI-driven penetration testing add-on for deeper manual assessments.

Barracuda's Application Protection portfolio, sold under Barracuda Web Application Firewall and Barracuda WAF-as-a-Service, is a US-based (Campbell, California) suite of tools protecting web applications and APIs from OWASP Top 10 attacks, SQL injection, and cross-site scripting. Full Layer 3-7 DDoS protection and machine-learning-based Advanced Bot Protection are built in at no extra charge, and the platform can be deployed as a hardware appliance, virtual appliance, or fully managed SaaS.

API security features include JSON and GraphQL protection, schema-based API discovery, and, on the Premium plan, machine-learning detection of shadow and zombie APIs. Pricing is entirely custom, quoted per protected application through Barracuda's sales team or its Build and Price tool, with two tiers, Advanced and Premium, differentiating log retention, bot mitigation depth, and deployment options.

Imperva is an enterprise cybersecurity vendor providing web application firewall, DDoS protection, API security, bot management, and data security products for large organizations. Its Data Security Fabric spans three tiers, Data Assure, Data Secure, and Data 360, covering data discovery, classification, compliance reporting, and threat detection across cloud and on-premises environments.

Imperva does not publish fixed prices; every plan requires contacting sales for a custom quote based on traffic volume, number of applications, and required features. It serves mid-size to large enterprises and is now owned by Thales, though it continues to operate under the Imperva brand.

Wordfence is a WordPress security plugin that installs directly on a site and provides an endpoint firewall, malware scanner, and login security tools such as two-factor authentication and brute-force protection. Because the firewall runs inside WordPress rather than in front of it in the cloud, it cannot be bypassed by attackers who find the origin server IP.

The free version delivers firewall rules and malware signatures with a 30-day delay, while paid tiers unlock real-time threat intelligence. Higher tiers, Care and Response, add hands-on setup, monitoring, and incident response from Wordfence's own security team for businesses that want managed protection.

Acunetix is a dynamic application security testing (DAST) scanner originally founded in Malta in 2005, now operating as part of Invicti Security's application security platform, with a primary office in Austin, Texas alongside teams in Malta, the UK, and Turkey. It scans web applications and APIs for over 7,000 vulnerability types, including OWASP Top 10 issues, using proof-based scanning to confirm findings and reduce false positives.

The platform adds AcuSensor for runtime code-level insight in PHP, ASP.NET, Java, and Node.js applications, plus AcuMonitor for out-of-band detection of blind XSS, XXE, and SSRF flaws. Acunetix is sold in Essentials, Professional, and Ultimate tiers, all priced through a custom quote rather than published rates, and it targets security teams at growing and enterprise organizations.