Hash – Is the Current Hashcash Evidence System Vulnerable to Quantum Computer Attack?

I've been trapped in the post-quantum cryptography scene for some time and understand that RSA or ECC cryptography inherent in a cryptocurrency network can easily be destroyed by a sufficiently large quantum computer. But I have a more specific question …

Is the Hashcash proof-of-work algorithm used by modern cryptocurrencies vulnerable to quantum attacks?

dnd 5e – Can a character knock an enemy that is already vulnerable?

Imagine a 5th-level fighter, Battle Master archetype.

He uses the Trip Attack maneuver on the first attack of his Attack action and hits the enemy in the stomach. In his second attack, he hits the enemy with advantage, and as a bonus action (thanks to the shieldmaster's mastery) he pushes the vulnerable enemy 10 feet into a pit.

Is that allowed by the rules? If an enemy is already vulnerable, can a character push the enemy away?

Security – Are Lightweight LN Purses Vulnerable to Withholding Transactions?

As far as I know, LN requires the user to watch the blockchain for a timed sanction. Running a full node, however, is likely to be a heavy burden for some users, especially for mobile phones. I once heard that an improved lightweight wallet protocol (like Neutrino) can solve this problem, but I've also heard that such a lightweight wallet protocol still relies on the entire node or server that provides the service, implied. In particular, a malicious full node may hide transactions from its clients, which appears to be a potential threat to lightweight LN wallets.

Vulnerable Web Application – SQL injection that is hard to find with a regular scanner like SQL Map

I am creating a "vulnerable web application".

Is there a way to create an SQL injection vulnerability that is easy to spot in manual testing, but very difficult (or impossible) when a normal SQL scanner such as SQL Map or Burp Active Scan is detected?

This is important to me because I want to find out which testers can detect the scanner without the scanner.

One possibility that immediately came to my mind would be if the user had only one way to submit the form, but that would be too impractical.
I could use one-time tokens (csrf), but it's relatively easy to tell a scanner to get a new one before each request.

Ubiquiti devices vulnerable to new attacks

Ubiquiti devices prone to new attacks | Web Hosting Talk

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var sidebar_align = & right; & # 39 ;;
var content_container_margin = parseInt (& # 39; 350px & # 39;);
var sidebar_width = parseInt (& # 39; 330px & # 39;);
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  1. Ubiquiti devices vulnerable to new attacks


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Is it possible to make an output of an encryption algorithm more vulnerable to cryptanalysis by changing the input?

For example (very simplified), encryption / decryption usually works as follows:

encrypted_data = encrypt (data, key)
data = decrypt (encrypted_data, key)

I wonder if it is possible to change the input dates so that the function encode would be reversible without that key (here the modification is called as + x):

encrypted_data = encrypt (data + x, key)
data = modified_decrypt (encrypted_data, x)

What I mean by modification is: perhaps it is possible to add a repeated pattern to the input data, or it may be a permutation, or it may find a particular x as a function of data.

If yes how? If not, why?

I know it would be specific to an encryption algorithm. So I need to know if this is possible with a popular encryption algorithm.

P.S. Possible applications include: data recovery for such viruses as Wannacry or identification of information loss in organizations, etc.

Is this JavaScript code vulnerable to DOM-based XSS?

In and of itself, no, because you actually do nothing with the user-driven text except run Splits() on it and no way to use that to inject code.

It's not very good code – you should use it location.search instead of location.href.split ("?")[1] For example, you almost never want to use a real string, such as "none", to indicate the absence of a value, especially if the expected type of the value is string (use one of the built-in values, such as zero or not defined) – but it is not inherently uncertain. Of course, depending on what you have do It could easily become vulnerable to your variables, but it is not.

To avoid adding a vulnerability:

  • Under no circumstances use eval () on user-influenced data. It is best to avoid it altogether (and its equivalents).
  • Do not use user-controlled data as an identifier for JavaScript objects, especially if the user has some control over the value assigned to a property or passed to a function.
  • Do not include user-influenced data in the DOM (for example, using innerHTML) without first disinfecting it, and if possible, use functions or properties that automatically disinfect the content instead of trying it for yourself.
  • Use user-driven data to create URLs (from top-level navigation to image sources) to prevent an attacker from controlling the recipient of the request in a way that causes information to be lost or malicious content to be loaded.

xss – SQL Injection over parameters, vulnerable or not?

I've tried a few things, but it seems that it's not prone. However, I can run XSS over errors it triggers.


Failed to convert property value of type java.lang.String to required type boolean for property ParameterValue; The nested exception is java.lang.IllegalArgumentException: Invalid Boolean value [false]

As you can see, it's Java backend running on Tomcat.

I have no experience with JDBC and am therefore unsure.

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