An attempt by a threat to exploit a weakness in a system.

learn more… | top users | synonyms

43
votes
4answers
4k views

Can simply decompressing a JPEG image be an exploit?

The novel Daemon is frequently praised for being realistic in its portrayal rather than just mashing buzzwords. However, this struck me as unrealistic: Gragg's e-mail contained a poisoned JPEG of ...
3
votes
2answers
45 views

TCP- or UDP-based Port Scans, IP Fragmented Packet

Is this normal or is someone trying to hack/attack me? How can I stop this? My router is a Cg3000v2 netgear provided to me by Optus. [TCP- or UDP-based Port Scan]411 Wed Aug 26 00:28:08 2015 ...
0
votes
3answers
50 views

Feasibility of time-based database brute-force attacks on websites

I recently learned that there is an attack that utilizes the fact that when brute-forcing a compared string (e.g. hash from a password or token) in a database the query fails a few nanoseconds earlier ...
5
votes
4answers
35k views

How safe is the 256-bit encryption used in bank transactions?

Most of the banks use a 128-bit or 256-bit encryption. What does this mean? Does it mean that the keys used in SSL are 128-bit long or what? If they are the SSL key lengths then 128 bit RSA keys are ...
5
votes
2answers
421 views

Yahoo mail hacked - how to recover, how did it happen and how to prevent?

I was yesterday informed by some friends that they received spam mails with my name as sender. The sender addresses look like firstnamelastname@spacepc.pt and firstnamelastname@revistaplot.com with ...
2
votes
2answers
209 views

Attack using weird characters followed by some javascript in a URL?

I'm seeing a very weird attack this morning from a pile of VPS instances spread out across the US. The URLs look like this: /js/bundles/,!0):this.element.propAttr( ...
3
votes
1answer
84 views

What sort of attack can reset MySQL Privileges and unmount remote drives without root or shell?

ATTACK VECTOR Monthly hits via a globally DDoS attack. Resolved with Cloudflare. Attacker can now somehow unmount network drive links and reset MySQL user permissions for applications. Attack is ...
-1
votes
0answers
23 views

Is this legally reverse engineering - unsecured API [migrated]

Is it (in a legal sense) reverse engineering to 'hack' into a completely unsecured API? Simple REST API used in Android app No SSL (just strait HTTP) Passwords are sent in plain text over this ...
3
votes
1answer
196 views

SSD Self Encrypting Drives - Setup / warm boot bypass

I've seen folks deploying the SED on laptops recently. I've discovered that there is a setting in which you can do a warm boot and NOT require the bootup password to be put in again. Which makes ...
1
vote
1answer
119 views

Thousands of 404s from various search engines

Since early April of 2015, my web site has been getting thousands of requests from many search engines for URLs that don't exist and never have existed. I found a similar, but less detailed, ...
-1
votes
2answers
441 views

DoS and Hacking - Terms and Definitions [closed]

Based on the top rated answer to this question: Is showing your IP address in the URL a bad practice? I'm curious to know if a DoS attack is consider 'hacking' or simply an 'attack.' I think ...
1
vote
0answers
34 views

DNSspoof not working

My aim is to DNSspoof. My network is using a wireless router with the address 192.168.1.1 and primary DNS is the same as the router address. I have enabled Kernel IP forward in Linux. DNS host file ...
3
votes
0answers
41 views

How does the birthday paradox apply to random keys? [migrated]

I'm developing a web app where I wish to use pseudorandom keys for items, perhaps akin to Imgur. I was thinking about how many combinations I need to reduce the chance of someone guessing any random ...
0
votes
0answers
35 views

where to look for latest network related attacks [closed]

I am going to start my career in Networking & network security when i am reading some CEH materials and some other materials i am getting outdated attacks but i wanted to know the latest attacks ...
2
votes
1answer
83 views

Rootkits, Bootkits detection and protection and Firmware alteration

I was hacked in an extremely intrusive manner in late 2013. Ever since then, not a day has passed where I don't think about this. A lot. My question has to do with the likelihood of the attackers ...
5
votes
2answers
687 views

UDP flood from my machine, or false positive?

The company that hosts my dedicated server has alerted me to what they think is malicious traffic coming from my machine. They supplied me with graphs showing a large amount of UDP traffic coming from ...
2
votes
3answers
205 views

Passwords propagation, Password Trend and Word Generator in Human Mind

Some passwords like "123456", "admin" are outrageously popular, so are the leet transformations and concatenation of digits. The users seem to pick up the password suggestions or just copy the ...
39
votes
4answers
6k views

Have computer criminals been known to exploit easily-edited websites like Wikipedia to embed malicious scripts?

When I was reading a page on Wikipedia several months ago (December 2014) I saw what looked like a pop-up window from BT, but I soon realized that when I closed the page the pop-up disappeared. I then ...
5
votes
1answer
98 views

Are there cases where malicious scripts on websites breached the sandbox of a browser so that files on the user's computer could be accessed?

Whenever a hosted script on a website tries to access a file on a user's computer the sandbox prevents it, but has there been any documented case where this sandbox obstacle was somehow overcome by ...
11
votes
3answers
3k views

Can you extract memory contents from a hibernated Windows machine?

In a recent discussion about hardware hacks, attacks surrounding Windows hibernate popped up. I am not entirely convinced that it would be viable to get stuff out of the memory saved to disk. When ...
5
votes
1answer
152 views

Ideas on how I can fragment captured network traffic?

I am trying to create a lab environment where I can analyze common IDS solutions (starting with Snort specifically) and their ability to reassemble fragmented IP trains. I have a collection of ...
11
votes
4answers
10k views

What type of attacks can be used vs MongoDB?

I'm starting to learn MongoDB and was curious if it was susceptible to some type of injection attack similar to SQLi. Due to the nature of the DB, I don't think you can inject into it but... What ...
3
votes
1answer
76 views

Is this an attempted cross-site attack?

I have found various 404 errors in my web server log that look like this: http://mywebsite.com/go.php?http://pastebin.com/raw.php?i=ffdkafkjasd ...
2
votes
3answers
62 views

Canvas fingerprinting identifies the OS?

I recently read this article, about how a journalist was hacked. She describes how they used a 'fingerprinting' technique to identify her OS. The way they use a one pixel image, it sounds like the ...
14
votes
1answer
1k views

Attackers of Google DNS hijacking

As we know Google DNS server (8.8.8.8) in 14th and 15th March was hijacked in Sao Paulo. And subsequent to this event, BGPmon.org announced an alert. Now, In a course assignment, we are asked to ...
1
vote
1answer
815 views

Router detecting constant ack flood attacks and port scans

I first noticed this yesterday in my logs - while I was configuring the router settings, so I don't know how long it's been going on. What should I do? I reconfigured my router with more secure ...
-1
votes
1answer
351 views

If someone downloaded 600GB , can that be ddos attack [duplicate]

Last night some one exploit some vulnerability in my site and then upload php script in my images folder. I have the Amazon EC2 server with centos. Now the Hacker downloaded 600GB and increased my ...
1
vote
2answers
55 views

If there is a malicious attack on one partition, is the other one safe?

I recently have used Bootcamp to set up a new partition and run Windows 7. About half of my HDD is designated to my OS X partition and the other half is allocated to the new Windows 7 partition. If ...
2
votes
1answer
504 views

Facebook iOS SDK Authentication

The Facebook iOS SDK only needs your bundle & app IDs of your iOS app to match those of your Facebook app. If I find out an app's app ID, can't I just create another iOS app with that app's ...
4
votes
1answer
78 views

What kind of attacks can target static resources?

Static resources and their caching interests me from the security perspective. Let's say we have an .jpg file requisted from the origin -> going through a reverse proxy with caching -> reaching the ...
0
votes
1answer
69 views

Hacked bluetooth speaker

I recently purchased a new OontZ Angle Plus bluetooth speaker and I believe that it has been hacked. I can't connect any of my devices to it, the bluetooth light indicates that it has been paired ...
42
votes
2answers
7k views

Is this an attempted SQL injection?

Looking through error logs I found lots of requests to a web-app where the URL contains: ...
-1
votes
0answers
53 views

Installing Ubuntu with a potentially compromised USB drive

I would like to use an USB Stick that is possibly flashed with the Bad USB firmware as an Ubuntu Live System while having an USB Disk containing a PDF file connected as well. The reason for this is ...
0
votes
0answers
27 views

Behaviour of DNS query packet

When the configured name server resolver is not reachable, the query packet will retransmitted after certain t times (in windows, every 1 seconds until 8 seconds,max). The behaviour of the legitimate ...
1
vote
3answers
3k views

How to search for evidence of Camfecting (webcam hacking)?

I'm worried about camfecting (webcam hacking). The camera light on my mac (running OSX) is not on, but it isn't hard wired so that doesn't say a lot. I've ran a virus scan but no signs. Now my idea ...
0
votes
2answers
86 views

Persistent XSS in Blogger domain

I have discovered persistent XSS in blogger domain. I have reported vulnerability to Google Security Team and I received this is the response: Users are permitted to place arbitrary JavaScript, ...
4
votes
2answers
142 views

Connected cars: Skills needed for a security specialist [closed]

Connected cars are being mass produced by many car manufactures such as Audi, GM, Honda and Hyundai (Founding members of the Open Automotive Alliance). Recently I have read a scaring article about ...
4
votes
4answers
132 views

Famous XSS attacks over JavaScript [closed]

I'm about to graduate in "Computer Science", and I'm writing thesis about the Javascript vulnerabilities. In particular, I'm analyzing the JS vulnerabilities that allow XSS attacks. I would like to ...
4
votes
5answers
173 views

Online Shop got hacked, fixed but is still under attack - what to do?

an xt-commerce-based online shop from a friend of mine got hacked recently. The attacker mailed that the shop is vulnerable, he showed the extracted data (basically he dumped the databases and cracked ...
7
votes
2answers
4k views

Do these regex show that I was hacked?

What do these regex commands mean? I found them when I ran the history command: grep --include=\*.php -rnw . -e "update.creditcard" grep --include=\*.php -rnw . -e "e41e" grep --include=\*.php -rnw . ...
7
votes
1answer
178 views

Kaminsky Bug DNS Cache Poisoning

I'm trying to use Kaminsky DNS cache poisoning method. I'm using bind9 server on ubuntu and static port. So far I achieved to insert a line into DNS cache which is ;additional www.blalba.com 80000 ...
-2
votes
1answer
44 views

Attack on Androids Encryption called FROST

http://www.extremetech.com/computing/150536-how-to-bypass-an-android-smartphones-encryption-and-security-put-it-in-the-freezer I read this article about FROST and in the comments someone was stating ...
1
vote
1answer
61 views

Is it effective to check how many times the same password was entered in fear of a string comparison timing attack?

How many times would an attacker have to enter the same password when doing a string comparison timing attack? I assume it would have to be at least a few dozen times to average out network lag, for ...
3
votes
1answer
74 views

String Comparison Timing Attack in Plain English

Could someone please tell me what a string comparison timing attack is in simple terms? I have Googled this, but all the explanations are very technical. Also, is this attack an better than a brute ...
0
votes
2answers
179 views

Are the Microsoft Windows images found on the internet safe?

Microsoft has stopped offering the Windows images for download. It is now only possible to get the image if one has a key of a retail version of the corresponding OS. The question is now, whether the ...
1
vote
5answers
73 views

Does services provided by different companies for DDoS protection work well?

Is it necessary to use any DDoS service provided by different web hosting provider and other people? We know, they are running their business to provide security to thousands of web property. They are ...
4
votes
1answer
40 views

How accurate the recent activities location provided by Microsoft emails

One of my emails is on hotmail.com provided by Microsoft. Recently, after few suspicious incidents where my computer was hacked and many other accounts, I changed all my passwords including this ...
2
votes
2answers
75 views

Are documented networks easier to attack? Are undocumented networks easier to protect?

I am learning about network documentation for the first time and have come across the following statement: Undocumented networks might not be protected and can be used to support insider attacks. ...
3
votes
1answer
247 views

My Ipv6 is under attack by the smurf6?

When I go to whatsmyip.org under my host name I get "Your.Ipv6.Is.Under.Attack.By.The.Smurf6.Info". What does this mean? I'm using private internet access as my VPN so I'm guessing PIA is under some ...
81
votes
9answers
144k views

Where can I find good dictionaries for dictionary attacks?

I’m wondering where I can find good collections of dictionaries which can be used for dictionary attacks? I've found some through Google, but I’m interested in hearing about where you get your ...