0
votes
1answer
43 views

Potential dangers of re-locating critical systems to cloud

It was suggested by some consultants that We relocate some of our critical systems in our environment to cloud base architecture. Besides knowing the fact that on a cloud base architecture we have no ...
0
votes
2answers
147 views

Running tails on a corporate computer

Is it safe to run TAILS on a corporate computer? I mean a corporate computer that has hardware cryptography and probably some backdoors; and, by safe, I mean that nobody will be able to recover what ...
0
votes
1answer
182 views

Lost CVV number automatically virus related?

If my credit card was used on Amazon, doesn't that mean someone has my cvv number? And would that mean I have a virus? Or is there another way they can get a CVV code off a credit card? I know it's ...
0
votes
1answer
192 views

Is SQL Injection possible in this PHP registration script? [closed]

I've recently created a PHP registration script for a website that a friend and I are working on. I've read up on the dangers of MySQL injection, and I was wondering if my current code is protected ...
0
votes
3answers
787 views

Which PHP encryption method is most incidentally-secure?

just started researching on the latest PHP encryption methods, I've found out my favorite algorithms are compromised. MD5 is no good, SHA-1 has "found flaws", SHA-512 isn't "meant for passwords", ...
0
votes
2answers
75 views

What information to provide when submitting a vulnerability report to a bounty program?

After finding a vulnerability in a program, one can submit it to a bounty program, such as ZDI. According to ZDI's website, they will examine the vulnerability and possibly offers a bounty. If the ...
0
votes
1answer
82 views

Is a SSL CA signed certificate necessary when connecting with IP Address?

I'm currently creating a socket server, and would like to encrypt communications. The thing is, the client will connect directly to the ip without any DNS. (Every user will know the Server's IP ...
0
votes
1answer
149 views

Phone got pick pocketed and I got a huge bill

I'm really sorry if this is posted in the wrong section. I did spend some time trying to get it right but I am not sure if this is... I have been exposed to thieves who have stolen my phone and then ...
0
votes
2answers
314 views

Prevent a file from being encrypted

Is it possible to prevent a file from being encrypted, or at least being easily decrypted in case of encryption? For instance; with the Crypto Locker malware attacking users, could you set up a ...
0
votes
2answers
172 views

Are buffer overflows on websites stoppable?

Recently, I was at the bookstore checking out books on computers. I found an interesting book on various types of hacks and how to stop them on your servers. One that caught my eye was the "buffer ...
0
votes
1answer
77 views

Application-Server connection security

I have this school project of mine that involves an app and a website that use the same database. The app serves as an administration tool for the website. Since it's made in C# and it's not as ...
0
votes
3answers
479 views

Can my raw html website get hacked?

I know that if you are using software for your website like wordpress, ip-board etc. there can be like in every software vulnerabilities. But what if you just have an apache server and a simple ...
0
votes
3answers
93 views

Screen capture through silent install routed back out port 80

A penetration test was allegedly done through the following method. The tester sent a user a a hyperlink that: Silently installed a piece of software/code/etc through the browser with 0 user ...
0
votes
4answers
160 views

Do firewall rules have to be symmetric? That is, does a firewall have to block a particular traffic type both inbound and outbound

Do firewall rules have to be symmetric? That is, does a firewall have to block a particular traffic type both inbound (to the protected site) and outbound (from the site)? Why or why not? I have to ...
0
votes
1answer
70 views

Security concerns on API

I just encountered API which I find pretty vulnerable. Could you clarify if my concerns are wrong? 1)For retrieving user data, API KEY, which is unique for every user i used. This api key is stored ...
0
votes
1answer
54 views

PCI DSS Compliance for a Level 4 organization

We are a small company and process less than 500 Credit Card transactions each year so we fall under Level 4 category merchants. The company heads wants to make sure that we are PCI compliant at all ...
0
votes
1answer
151 views

Can a botnet be used to effectively break encryption keys?

Can a botnet amass and coordinate enough computing power to break encryption keys that are typically considered to be secure (through brute force)? If this is the case, do we need to make our ...
0
votes
1answer
96 views

Why do we encrypt ephemeral Public key in Encrypted Key Exchange

Encrypted Key Exchange can resist off-line dictionary attack Protocol : A ---> B : Ep (PK) B ---> A : Ep(Epk(K)) K is Session Key generated by B PK is an ephemeral public key ...
0
votes
4answers
477 views

Masking IP address and port number for Web application [closed]

I have a Web application running on port 89 ( non-standard port) of a Windows 2012 R2 machine. The login page for this application needs to be accessible through a link on my website - let's call it ...
0
votes
1answer
76 views

Does encrypting the message protect it against length extension attacks

Assuming the following HMAC is used : HMACK(M) = Hash(K||M) = H which is "secret-prefix" hashed function. M is the plaintext message , K is the secret key used The ciphertext is generated as follow : ...
0
votes
2answers
160 views

How to be sure that downloaded file is correct? [duplicate]

Last week I read a lot about security. I have a basic understanding how public keys or private keys works. But I still have a lot of questions I can't find an answer. Right now I'm interested in ...
0
votes
1answer
328 views

defend against LOIC Hive Mind attack

Other than client puzzles, what are some things a website can do to defend itself against a LOIC Hive Mind attack? The Low Orbit Ion Cannon (LOIC) is an attack tool which features a user-friendly GUI ...
0
votes
1answer
182 views

Posssible hack on site?

I found a strange file on one of my servers containing the code below. The file was last modified one week ago at 1.40AM in the night, which is a bit odd. I have done lots of changes on this site ...
0
votes
2answers
200 views

Stateless session cookie and logout

I have implemented stateless session cookie, something along the lines of this article: Demystifying Web Authentication (Stateless Session Cookies) The cookie contain an expiry time within the ...
0
votes
4answers
279 views

If a large companies website's robots.txt file has no Disallow section, does this mean I am free to write code to crawl their website? [closed]

If a large companies website's robots.txt file has no Disallow section, does this mean I am free to write code to crawl their website? The website in question is basically a data warehouse for the ...
0
votes
1answer
227 views

My computer hacked? tcpdump show a connection to an ALLOCATED UNSPECIFIED ip address

13:06:05.345111 IP 192.168.1.101.36218 > 157.55.130.174.40033: Flags [.], ack 162, win 237, options [nop,nop,TS val 688796 ecr 596714815], length 0 This IP address is Allocated Unspecified on ...
0
votes
1answer
154 views

Can a hacker who has entered a virtual honeypot attack a LAN?

Is it possible for a hacker who has entered a honeypot (running in a virtual machine e.g. virtualbox), to attack real computers on a LAN?
0
votes
2answers
220 views

How are Wi-Fi access points verified?

Most Wi-Fi security is focussed on blocking authorised access to the network providing a wireless access point; but considering the smorgasbord of background app-to-cloud communication on a mobile ...
0
votes
2answers
67 views

How do I prove my proxy is scanning for viruses?

I have a proxy server in my DMZ that among other tasks has the role of scanning incoming messages - email, SOAP - for viruses. How do I prove to my team leader that it is performing this role on all ...
0
votes
2answers
93 views

Impossible to make connections through closed ports?

If you have closed all your ports on your internet protocol, you cannot make a connection to that internet protocol. So how do attackers (DoS or any other means that need a connection) make a ...
0
votes
1answer
1k views

How to test for zone transfer? [duplicate]

I heard that it is possible to test for zone transfer attacks on a web application using host and dig commands in Linux. How it is done?
0
votes
1answer
225 views

arp spoofing in VMware ESXi

I have a VMware ESXi server and I want to create two virtual machines with specific public IP addresses. Is it possible for the 2 virtual machines to sniff each other's traffic ? If so how can it be ...
0
votes
1answer
354 views

suspicious http request in logs

I found this request in my Ubuntu 14.04 apache2 access.log: xxx.228.207.244 - - [25/Sep/2014:17:52:03 -0400] "GET ...
0
votes
2answers
287 views

What is actually the purpose of encrypting the values in a cookie?

I was researching on internet security. When I reached at section Cookies, I happened to read that the values inside a cookie are generally stored only after encrypting them. But an encryption can be ...
0
votes
1answer
149 views

Requiring a pin instead of password for websites?

Curious if this could be a good alternative to passwords. On a website, user can choose to use a pin instead of password. If she does elect to do this (given option) from then on, her account asks for ...
0
votes
3answers
156 views

How would I secure my hosts file?

I know the hosts file is often deemed obsolete by an actual DNS, but what is/are the best way(s) to secure a hosts file (Current Best Practice)? Example: Would I delete the hosts file, input known ...
0
votes
1answer
170 views

Are shell scripts / bash inherently less secure than other (script) languages such as python?

Are shell scripts / bash suitable for any kind of task as long as the developer(s) write correct, security bug free scripts? Or are shell scripts / bash less advisable for some tasks such as parsing ...
0
votes
1answer
47 views

recreating CSRF Token after usage [duplicate]

Is it a good practice to recreate the CSRF Token once its been used (basically create a new taken after a post request is sent)? Or it an unnecessary measure to take? My current system is recreating ...
0
votes
1answer
156 views

Secure way to pass client certificate to the client2

Our product is comprised of two servers. We would like to authenticate one server to the main server by means of client certificate. I assume that we should ask the customers (who purchase the ...
0
votes
2answers
1k views

WiFi Hotspot's Evil Twin

So an Evil Twin Wifi hotspot is a hotspot with the same SSID and/or same MAC that when the victim auto-connect to this hotspot, all traffic go through this evil twin and thus the information ...
0
votes
2answers
599 views

Can a mobile number ring if the person has not inserted their simcard into their phone? [closed]

I dialled a cell phone number and it rang but with no reply. I asked the person later why they did not answer and they said the Sim card was not in the phone. In fact, it was in a purse.... Is this ...
0
votes
2answers
379 views

Gmail spam from contacts. How does it work?

I don't know why it seems IMPOSSIBLE to find a blog or any security expert explaining the procedure of how this 'hack' works. My wife is receiving emails from people she's emailed through Gmail ...
0
votes
1answer
217 views

What multiplier to use when calculating the average time to crack passwords with a given entropy?

Suppose that we have a process that generates passwords with entropy E. I'd like to compute the average time it would take for a brute-force attack to crack an MD5-hashed instance of such a password. ...
0
votes
2answers
209 views

Penetration testing preventive or detective control?

I have always wondered if penetration testing is a preventive or detective control. My view is that it is both preventive (preventive as it scans for vulnerabilities, which can be fixed to prevent ...
0
votes
3answers
114 views

Why do we use such a redundant language (English) for network communication? [closed]

I have heard throughout the internet that English is incredibly redundant. So why do we turn English messages in to a cipher which is then, from my understanding more vulnerable to letter frequency ...
0
votes
2answers
115 views

Where to find such URLs that attack their visitors? [closed]

Where can I find websites that perform drive-by dowload attacks ? I need such websites in order to test a software that prevents such attacks. I am in the testing phase but I do not see where I could ...
0
votes
1answer
69 views

Should content from database be sanitized again

Suppose I save content into the database after sanitizing it. Is there still a need to sanitize it again when retrieving it? If yes, why?
0
votes
2answers
161 views

Wireshark displays sql calls - Prevention

So I was analysing a new application that is being written. I noticed that on the app server level there are sql calls that are being made from C# code. These calls can be seen in wireshark by ...
0
votes
3answers
100 views

Permissions security scenarios for a web server

Having /var/www/site.com owned by www-data:www-data with a 750 permission for directories and 640 for files, and having my user alexb added to www-data group, I found my self with permission issues ...
0
votes
4answers
198 views

Why must every OTP be unique

All OTP systems that I have observed, send a new OTP every time a user requests for an OTP. (for example whatsapp) Only the latest OTP is valid and an OTP can only be used for X hours. I am wondering ...

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