Nmap Network Scanning: The Official Nmap Project Guide to Network Discovery and Security Scanning
More product info
From Gordon Fyodor Lyon
Refresh the report to view the most up-to-date data available:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Most Trusted Reviews
TRUST
- Verified Purchaser
- Take-Back Reviewer (3 deleted Reviews; avg. rating: 4.7)
- Overrepresented Participation (posted 14 Reviews)
- Easy Grader (avg. rating: 4.9)
Least Trusted Reviews
TRUST
- Verified Purchaser
- Contains repetitive phrases (show)
- Overlapping Review History: reviewed 3 of 9 top products
- Critical Reviewer (avg. rating: 4.1)
Analysis Details
Take-Back Reviewers
55 of the 94 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
We discovered a total of 3 deleted Reviews for this product, with an average rating of 5. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
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- 10%
- Created over 3 days
We counted 94 reviews for this product over the span of 4,501 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 1 or fewer reviews on any given day.
However, we see the following 3 days exceeding this threshold:In total, we found that 9 reviews were created on just 3 days. Although any days with a larger number of reviews than expected is suspicious, the discrepancy in ratings from reviews created on these high volume days and reviews created on other days isn't significant enough to rule out the possibility of it being due to random chance.
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
(4.0/5)
(5.0/5)
21 of the 94 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
19 of the 94 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
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- 0%
- Have an overrepresented word count
Read more about our Word Count Comparison test.
12% also reviewed:
Metasploit: The Penetration Tester's Guide by David Kennedy
7% also reviewed:
Rtfm: Red Team Field Manual by Ben Clark
4% also reviewed:
The Basics of Hacking and Penetration Testing:... by Patrick Engebretson
4% also reviewed:
Defend I.T.: Security by Example by Ajay Gupta
4% also reviewed:
Wireshark 101: Essential Skills for Network... by Laura Chappell
4% also reviewed:
Google Hacking for Penetration Testers, Volume 1 by Brand: Syngress
4% also reviewed:
Inside the SPAM Cartel: By Spammer-X by Brand: Syngress
4% also reviewed:
Roku 2 XS 1080p Streaming Player (Old Model) by Roku
4% also reviewed:
Fire TV Stick bundle with Echo Dot (2nd Gen) -... by Amazon
25 of the 94 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
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- 28%
- From reviewers with an overrepresented participation
We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 26 reviewers (or 28%) are within an overrepresented participation group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
4.3 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Brand Repeaters
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- 0%
- Admitted to receiving an incentive
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.