False positive is the case where the positive result of a test doesn't correspond to reality. It can lead to the wrong decision.
Questions tagged [false-positive]
236 questions
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How to calculate the false positive rate of ddos detection algorithm?
False Positive(FP),True Negative(TN),Actual Negative(FP+TN).
We can calculate the false positive rate by FP/(FP+TN);
In DDoS detection experiments, the false positive happens when we misjudge the legitimate traffic as malicious traffic. However, the…

codetime
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False IPN message "Incomplete"
Application: Adaptive Parallel Payments
Use Case Error: When Guest user pays a list of verified and unverified users, all payments and notifications are made but an INCOMPLETE Status is reported that triggers a false: "Your payment can't be…

INrange
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Eliminating false positives in feature descriptors
Given two occupancy grid maps converted into cv::Mat grayscale, I used ORB feature descriptor and match the extracted features from both images. Most of it are false positives. Here below, I only showed one relation to show that it is really a false…

Xegara
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Why does IF think there is a file here
This is my code and it always seems to think that %filePath% exists, when I assume you it does not. No P:\Production\Database_backup\02182014-Database0400.mdb at all. My desktop is just for the testing before this gets used on he production DB
set…

PsychoData
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CA2000 - "out-of-school-junior-programmers"-mistakes or false positive?
I am currently developing some desktop applications using websockets (to be more precisely: i am working with Alchemy WebSockets). By now my code is working fine, but Visual Studio 2010 tells me to
Warning 2 CA2000 : Microsoft.Reliability : In…

Matthias R.
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C: False condition is interpreted as true in if statement
So I have the following program:
# define swap(a,b) temp=a; a=b; b=temp;
int main() {
int i, j, temp;
i = 5;
j = 10;
temp = 0;
if (i > j)
swap(i, j);
printf("%d %d %d", i, j, temp);
}
This results in:
10, 0, 0
What I don't understand is why…

Eric Bergman
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Detects chained SQL injection attempts 1/2" in PHPSESSID cookie
We have ModSecurity installed on our application server and sometimes an request is blocked because ModSecurity detects SQL Injection on PHPSESSID cookie.
GET /somepage.php HTTP/1.1
Host: www.domain.com
User-Agent: Mozilla/5.0 (Macintosh; Intel…

Jonathan Delgado
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How can i compress this into an EXE without it being seen as a virus? its an updater for my game :/
I have a batch application which i compress into an exe, unfortunately all virus software detects it as virus due to the fact it has wget and 7zip embeded into the application. anyone know how to solve this?
@echo off
title Checking for…

Dustin Harris
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Anyone has Avast reporting false positive on web protection?
I have a website built on HTML5 initializr.com bootstrap code.
Until last week it worked fine. Today my AVAST antivirus installed on windows started blocking the navigation on this website because of Infection: JS:Decode-AQE [Trj] (Trojan Horse it…

kante
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Why does browser.text.include? .should == true not work properly? returns incorrect value of false -cucumber -watir webdriver -rspec
Below is my script. As mentioned in the code comments below, when I execute the browser.text.include?(item).should == true from cmd prompt -> irb I correctly get the value true returned when searching for the expected web page content. When…

user2465163
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Multtest package in R returning not properly adjusting p-values
I am trying to use the R package multtest to adjust a list of p-values for multiple testing. However, multtest will only return a list of "1" characters of equal length to the list of p-values that were analyzed.
The input file is a text file in…

gwilymh
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Java Hash Map containsKey is returning true when it should not
So I have this method that adds an object to a display. When the display is first opened all of the existing objects get added in to the HashMap 1 by 1. After that the user can add more, 1 at a time which puts a new object into the HashMap.
the…

user1855475
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False positives and False Negatives with Instr function
I am trying to look through an array for values using InStr. However, I am getting false positives and false negatives.
I.e. there will be a string match and no match will be reported or no match reported even though the string matches exactly.
It…

Info5ek
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win32 PE encryptor = antivirus false positive
I'm trying to protect my programs against cracking and reverse engineering.
I wrote programs in C++ (Visual Studio 2010) and I also wrote easy encryption algorithms in assembler. Algorithm is added to EXE file and make it harder to cracking, because…

Juraj Kušnier
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3 answers
False positive when statically analyzing code in XCode 3.2
I just ran into an issue with the XCode static code analyzer of XCode 3.2. It shows me a potential leak which I find is not justified. I just want to check with other people and make sure it really is a false positive.
Here is the main code (in some…

Harald
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