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Arbor DDoS vs SiteLock comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jun 3, 2026

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Arbor DDoS
Ranking in Distributed Denial-of-Service (DDoS) Protection
4th
Average Rating
8.8
Reviews Sentiment
6.9
Number of Reviews
57
Ranking in other categories
No ranking in other categories
SiteLock
Ranking in Distributed Denial-of-Service (DDoS) Protection
27th
Average Rating
6.6
Reviews Sentiment
8.1
Number of Reviews
3
Ranking in other categories
Static Application Security Testing (SAST) (47th), CDN (16th), Web Application Firewall (WAF) (37th)
 

Mindshare comparison

As of October 2026, in the Distributed Denial-of-Service (DDoS) Protection category, the mindshare of Arbor DDoS is 5.5%, down from 11.4% compared to the previous year. The mindshare of SiteLock is 2.2%, up from 0.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Distributed Denial-of-Service (DDoS) Protection Mindshare Distribution
ProductMindshare (%)
Arbor DDoS5.5%
SiteLock2.2%
Other92.3%
Distributed Denial-of-Service (DDoS) Protection
 

Featured Reviews

reviewer1331304 - PeerSpot reviewer
Director Of Research And Development at a comms service provider with 11-50 employees
Automated threat intelligence and flow-based mitigation have improved our DDoS defense
A very useful feature in Arbor DDoS is its ability to send flow spec announcements to routers. For example, if it is clear that a Layer 3 or Layer 4 attack is occurring and the attack pattern is identified through source and destination IP addresses and ports, you can generate flow spec filters. These filters are transferred through BGP to border routers, which automatically build filters, mitigating the attack even at the network's boundary and preventing it from reaching the TMS. This allows the TMS to focus on other tasks. This is a highly effective feature that can mitigate huge volumetric attacks; for example, we experienced a 32-gigabit attack, and all those 32 gigabits were dropped by our border routers, not by Arbor DDoS itself. The flow spec announcement was generated by Arbor DDoS, and as far as I know, the same technology is used by Radware, but it comes under a different feature and a different license. At the time, we were told that flow spec mitigation was an additional very expensive license to purchase from Radware, while Radware included everything in one package.
it_user723534 - PeerSpot reviewer
Guitarist at a media company with self employed
It's not easy to get out once you're in
Sitelock may perform a useful service, but be wary of giving them your credit card information. When you sign on for the paid service, Sitelock: * Hides (makes it difficult to find) that they default the auto-renew (you can't sign up without agreeing to have them automatically bill your credit card every year). * Hides (makes it difficult to find) how to stop auto-renew: * You can't just stop auto-renew from your billing panel, the way you can with reputable businesses. * You have to hunt their website for a link (in extremely small font) to the page which contains instructions for cancelling. * When you get to that page, turns out it's the 5000+ word "Terms of Service" document, which you have to scour to find a phone number. Then, you have to call and get put on hold (or if you like, they will call you back three days later). Once you finally get through, you have to jump through a lot of security hoops. All of the above, just to cancel the service. Their product may or may not be OK, but be forewarned that with Sitelock, it's not easy to get out once you're in.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The analytics part of Arbor DDoS is great, and we are satisfied with the reporting and analytics part, especially the new version."
"Arbor has the ability to learn and self-create the appropriate profile for each customer, ensuring that false positives are kept to a minimum."
"We found what we wanted in Arbor DDoS; it met our expectations as IT users of different types of complex environments and fit our needs."
"Arbor DDoS is used for network protection if you have a DDoS attack, it keeps the session or information moving."
"Arbor Pravail APS devices provide easy management, high visibility, and quick response capabilities."
"Reporting is quite good. There are several pages of reporting on DDoS attacks, and you can find all the details that you need."
"It's very flexible and we can easily deploy it to our network. It's very user-friendly. We can do everything via the web interface and troubleshoot easily from the CLI. It's not complicated."
"Using standard BGP, NetFlow and SNMP ensure wide compatibility. There are also peering traffic reports that can help identify upstream peering opportunities. The ATLAS aggregation service allows us to contribute to the global DDoS data and benefit from overall trends."
"Not only did SiteLock's website scanner find the issue with my website, but with SiteLock I was able to implement a security system to prevent future breaches."
"It seems to provide a bit of useful information on website health."
 

Cons

"Cloud signaling integration with third-party DDoS solution provider. Currently, it supports only its DDoS APS box."
"Unfortunately, these devices are not scalable and we have to upgrade to the next model in order to increase the threat mitigation capabilities."
"Arbor DDoS could improve out-of-the-box reporting, it could be better."
"On the main page there are alerts that we are unable to clear, even though the issue has been resolved."
"I believe that the Arbor Cloud should be available, even if the customer does not have any Arbor appliance on-premise."
"Sometimes it blocks legitimate traffic. If a legitimate user is trying to access the server continuously, the product suspects that this is a DoS traffic file. That is a case where it needs to improve. It needs machine-learning."
"There is always room for improvement for any product or service. If we can bring in more agility when deploying services, that is definitely a scope which we can work towards. Nowadays, everything is being offered as a service model. It is not that we have to deploy the physical hardware, many things move up to the cloud, or even can be delivered in the VNS form in the customer's environment as well. So, in that space, if we can add more features to make it more seamless for customers to use and make it available through some marketplace, not only at the hyperscalers, but also for any on-prem deployment, that definitely would be a big plus."
"The support got worse after NETSCOUT acquired Arbor."
"Sitelock may perform a useful service, but be wary of giving them your credit card information."
 

Pricing and Cost Advice

"Our customers always complain about the price of the product."
"I don't know about the pricing details as our company's service provider offers us the solution as an inbuilt feature within the internet bandwidth they provide us."
"The pricing of the solution is cheap."
"I'm a technical guy. But I know it's expensive compared to its competitors. After you have the on-premise solution, for your solution to be effective you have to subscribe to an "upper level," so there's another cost. There is also a subscription to cloud services, which is another cost."
"It is an expensive product. I use this product for its different features."
"The licensing of a complete Arbor solution, including fire-walling and unified site management, can get expensive."
"Start with a small license. Measure your bandwidth requirements."
"The price of Arbor DDoS depends on many parameters. It depends on the physical capacity of the environment, and it is not a straight-line price. It's fairly competitive in the market on the price."
"You can't just stop auto-renew from your billing panel, the way you can with reputable businesses."
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Top Industries

By visitors reading reviews
Financial Services Firm
14%
Comms Service Provider
12%
Outsourcing Company
11%
Construction Company
6%
Construction Company
17%
Manufacturing Company
14%
Comms Service Provider
14%
Transportation Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business26
Midsize Enterprise14
Large Enterprise29
No data available
 

Questions from the Community

Which is the best DDoS protection solution for a big ISP for monitoring and mitigating?
I would say if it’s an ISP that will build a scrubbing center, Netscout/Arbor is a good solution. In all other solutions, Imperva is a great choice.
Which is the best DDoS protection solution for a big ISP for monitoring and mitigating?
Arbor would be the best bid, apart from Arbor, Palo Alto and Fortinet have good solutions. As this is an ISP, I would prefer Arbor.
What is your experience regarding pricing and costs for Arbor DDoS?
The prices for Arbor DDoS are expensive. The licensing is subscription-based. From our sales department, they discuss that prices are very high.
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Comparisons

 

Also Known As

Arbor Networks SP, Arbor Networks TMS, Arbor Cloud for ENT
No data available
 

Overview

 

Sample Customers

Xtel Communications
galaxyguitar.com, robertasinc.com, indiarunning.com, comprarenpr.com, idbasolutions.com, newgrip.com
Find out what your peers are saying about Arbor DDoS vs. SiteLock and other solutions. Updated: September 2026.
915,341 professionals have used our research since 2012.