prevention of an attack vector (e.g. XSS, HPP, CSRF)

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2answers
88 views

What is the likelihood of a NAS getting hacked? [closed]

I'm looking at NAS (network attached storage) to use as one of several backup storage devices to store my data, since I cannot find a DAS (direct attached storage) with RAID functionality (all of the ...
1
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1answer
63 views

LAN access from remote router logs

I have a Ubuntu Server into in my network with SSH open, port 22, UFW enabled for that. The SSH is protected with my password and I created another user for my SSH connection. Today I noticed these ...
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0answers
16 views

Does CKEditor for ASP.NET do auto sanitation?

I don't see anywhere to enable a sanitizer in the CKEditor ASP.NET implementation. How are we supposed to do sanitation?
4
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0answers
88 views

Attacks on wifi router, don't know what to do or if I should be concerned [closed]

I'm wondering if these attacks are something to worry about, or just my router being a router. [DoS attack: ACK Scan] attack packets in last 20 sec from ip [60.221.xxx.xxx], Friday, May 06,2016 21:12:...
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2answers
54 views

When moving beyond SSL3 is not possible, what cipher suites are immune to POODLE?

I understand that anything not using CBC will work, but are there any such modes? I'd also like to avoid weak stuff like RC4/5 and MD5 so preferrably ciphers that use sensible functions. On a SSL 3.0 ...
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0answers
31 views

Linux service on UDP ports under MITM or fuzzing attack

I am rather new to this forum but I will try my best to explain my situation. I run a game server for an outdated game called Project Reality. The community is rather small and the remaining servers ...
1
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2answers
108 views

Does unsecure delivery of keys and certs make a VPN useless?

I had to install an OpenVPN service onto a fresh, disconnected computer, but the keys and certs were delivered through an insecure computer with a highly suspect connection. Let's assume that the ...
4
votes
1answer
152 views

How does reuse attack protection (RAP) work?

The grsecurity folks just released a test patch for the 4.5 Linux kernel which includes Return Address Reuse Attack Protection or RAP, a protection technique against return-oriented programming (ROP). ...
1
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3answers
214 views

How to protect WordPress from brute-force attacks?

One of my WordPress sites is being constantly attacked with brute force. I have the WordFence and Clef plugins installed. The number of login attempts is limited to just one. The password is very ...
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2answers
242 views

What can I do about being heavily port scanned?

I have two devices connected wirelessly to my Linksys router while running Symantec Endpoint Protection on my computer. A few days ago I started using the internet by connecting the cable directly to ...
0
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1answer
46 views

Does posting my computer name publicly make my system vulnerable?

I am wondering if it is paranoia and/or privacy overkill to block out one's computer name when posting terminal output in public forums? I don't know enough about networking to know if it's possible ...
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1answer
84 views

Attack Challenge/Response Authentication by requesting challenges

If a client/server application uses a challenge/response pattern for authentication, e.g. SCRAM or alike, it often involves the usage of nonces (client nonce and server nonce) for preventing replay ...
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1answer
52 views

Review of a protocol

I am wondering if anyone could give a second opinion whether the following is secure or not. I have a system which consist of a mobile device, FTP server and a PC. The mobile device is to upload ...
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5answers
3k views

Why do hackers scan for open ports?

So, whenever you hear of the mean little hackers who hack websites you hear of "port scanning". I understand what it is (looking for all open ports / services on a remote machine), however that begs ...
2
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0answers
296 views

How can I protect my home/office computer against row hammer?

Row hammer seems to affect ECC memory less, but ECC is still not immune. I have heard of software mitigations like ANVIL, but that doesn't seem to be 100% row-hammer-proof either. What software or ...
3
votes
1answer
109 views

Two factor brute force protection

If I implement two factor authentication using TOTP, I (obviously) have to protect against simple brute force attacks of the TOTP value. If I ask for the TOTP value after successful password login, ...
1
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1answer
79 views

Timestamp vs Replay attack

1) A → B : username, timestamp, h(password) 2) A → B : username, h(password), h(timestamp) Can above two formula prevent from suffering replay attack? I think 1 is immune from replay attack but i ...
107
votes
4answers
11k views

How does ransomware get on people's computers?

I've noticed increased frequency of ransomware questions around Stack Exchange. Some of the people I remotely know had their devices recently infected as well. I'm starting to be concerned. When ...
3
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1answer
50 views

SHA 1 no impact to root certificate

I ran a scan on a server and the results of the authentication for digital certificate was as follows : Certificate 1 (root) signature algorithm: Sha256withRSA Certificate 2 (chain of trust) ...
2
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2answers
52 views

IP Restricted OTP like Web Admin Authentication Safe or Not

I created a web admin panel with the following security implementation. It is located on a sub directory of the web, which will trigger a 404 Error when tried to access (just like the link is ...
1
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0answers
35 views

OpenID Connect in browser audience verification

With OpenID Connect it's required to validate the ID Token audience claim to make sure the access token was issued for this specific client in order to prevent the Confused Deputy Problem. Now, in a ...
2
votes
3answers
75 views

Should it considered a risk if an organization's server OS and version information is leaked? [duplicate]

I am assuming that it should be considered a risk because there may be several security issues of various OSes known to hackers. If a hacker gets access into the victim's network, the extra knowledge ...
0
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1answer
57 views

Does using Tails make one a target? Is it possible to identify users of security-focused operating systems like Tails?

I'm wondering if Tails takes countermeasures to prevent the techniques that http://panopticlick.eff.org/ uses from identifying Tails users as such. (Presumably adversaries could identify users that ...
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0answers
56 views

Prevention of sinkhole attacks

I have read about many approaches to launch and detect sinkhole attacks in wireless (sensor) networks. Yet I couldn't find any (good) articles to read about the prevention/avoidance of sinkhole ...
3
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3answers
63 views

Collect infected email attachments

I am having catch-all mailboxes for a lot of domains. The mails I receive for them are either spam or have viruses or trojans attached. So far I am just throwing them away, but I wondered if it wasn'...
0
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1answer
66 views

Can my car be hacked? [closed]

I was reading this article about car hacking and the fact that there are a half million vulnerable cars scared the living daylights out of me! I did some research and many sources claim that car ...
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votes
1answer
61 views

Can an ip be forced to connect? If so, how is it done, and how can I prevent it? [closed]

Can an IP be forced to receive data from another IP (specifically IPv6 for both)? If so how does this work, and how can I prevent this from happening to me? Does that have any way to be broken? If so ...
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2answers
76 views

How to protect my email and social media accounts?

Someone been hacking my account. It seems the person is expert hacker. I have had changed my password multiple times. They seems to know personal details of my life and things on my gmail and facebook ...
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2answers
185 views

Prevent Session Hijacking, where an attacker steals Session ID(cookie) from the browser physically

Consider a case, where an attacker has physical access of user's machine for 20-30 seconds. The attacker can use this time to steal user's cookie (say using EditThisCookie plugin) and send the cookies ...
157
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2answers
21k views

What is DROWN and how does it work?

There is a new recent attack "on TLS" named "DROWN". I understand that it appears to use bad SSLv2 requests to recover static (certificate) keys. My question is: How? How can you recover static ...
0
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1answer
53 views

Event: ET SCAN Nmap NSE Heartbleed Request

Last night I got this incident on my siem tool: Event: ET SCAN Nmap NSE Heartbleed Request. Incident triggered from blacklisted IP to our open VPN server. Clicking on the signature content it ...
3
votes
3answers
46 views

Is there a reason to create a database user without schema privileges?

One of the common things seen people setup is database users (for use by an actual application) that only have SELECT/UPDATE/INSERT/DELETE permissions. A separate user (that additionally has CREATE/...
2
votes
3answers
86 views

Can a curl request to an arbitrary url made sufficiently safe?

This is a follow up of another topic (Is allowing unfiltered curl request from a website a vulnerability?) on which I am doing some private research. Given: A publicly reachable webservice that ...
0
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0answers
112 views

How necessary is CAPTCHA (or similar) in REST APIs?

I'm currently implementing a REST API designed to be consumed by multiple platforms (iOS, Android, HTML5/Javascript), and I'm trying to protect my service and reduce (AWS) costs by preventing bots ...
3
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2answers
153 views

Preventing man in middle attack (LAN)

I am working on a local area chat application which would simply establish connection between two sockets on the LAN and proceed with communication. Now focusing on security, my main concern is to ...
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2answers
370 views

Where can I get a list of “bad” IP addresses that are likely to be used by attackers or spammers? [closed]

Is there an open source project or a list of "bad" IP addresses or ranges that are likely to be used by attackers or spammers? UPDATE: ideally I want it to be a service call so I can call it using ...
3
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0answers
53 views

ASCII Armoring in a little endian system

With regard to the question: How does ASCII-Armoring help to prevent buffer-overflow attacks?: How the armored region prevents the attack? If the most significant byte of the return address is 0x00 ...
6
votes
1answer
97 views

Using AES with same salt / IV - required for pattern matching algorithm

I need to securely encrypt data we are storing, but for each client I need the same plaintext to encrypt into the same cypher text. The reason for this is the data is still required for a pattern ...
1
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1answer
44 views

How do these techniques work for protecting against SYN flood?

I'm reading about how SYN flood can be prevented. Wikipedia has Filtering Increasing Backlog Reducing SYN-RECEIVED Timer Recycling the Oldest Half-Open TCP SYN Cache SYN cookies Hybrid Approaches ...
1
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2answers
119 views

How eavesdropping attack takes place in network

I am learning some concepts of network security and I have the following question: One case of eavesdropping attack is that an adversary somehow places himself inside a network to order to capture ...
1
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3answers
78 views

API Method Parameter Enumeration via Web Browser

I am obligated by contract to prevent enumeration of an API method's parameters but cannot achieve it. When I send a blank request to the API server in a web browser, the server responds with the ...
2
votes
2answers
149 views

How can an attacker tell when someone in a private network connects to the Internet? [closed]

I heard that your PC can get infected just by connecting to the Internet (even without the web). Assuming I'm connected to a private home network, how can an attacker tell that I just connected to the ...
0
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1answer
1k views

On the ability to reverse engineer the Instagram Private API

I came across these blog posts where a man was able to extract the Instagram private signature key from the Android app: http://mokhdzanifaeq.github.io/extracting-instagram-signature-key/ Which could ...
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votes
2answers
237 views

attack on port 80 [closed]

I have a ubuntu ec2 instance server hosting apache2 site & tomcat7 at back end. According to apache logs I have doubt there malicious attack ! Please can anyone confirm it & what can i do to ...
1
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3answers
82 views

Securely verifying a user based on bio metrics [duplicate]

So we all have cameras on our phone, and we all have faces on our bodies(hopefully). We all also have a want to keep our data safe and secure. To that end many companies have tried to make secure ...
-1
votes
1answer
45 views

How to secure the cloud hosted web server safe from attack ? [duplicate]

We have got a web server (Apache) hosted externally. It has got multiple times attacks from the hackers (The Index file getting changed) even after getting moved from another location also. Kindly ...
-2
votes
1answer
56 views

What is a transient attack?

I just faced a problem of an IP is taking forever to respond, i had been told it might be a transient attack.... I tried googling it, but cant really find more info. Can anyone kindly explain to me ...
2
votes
4answers
149 views

What is the risk of different responses when a login username matches or not?

I am responsible for a website that allows a user to reset the password, as usual. However, the response of the website is different whether the entered username matches or not. This would allow an ...
0
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0answers
86 views

SSH attempt blocked now ECDSA keys changed

Last night I had an external IP tried to access my server over SSH. The attempt was blocked as it failed to authorise in the number of times and time limit that I'd specified. Doing a whois on the ip ...
1
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2answers
185 views

Router or Switch can defend against ARP spoofing attack?

I'm learning about ARP spoofing attacks. Can a router or switch defend against ARP attacks?