the process of tightening security on a system.

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1
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2answers
46 views

Hardening charity volunteers' access to a web server [on hold]

I'm helping to administer a LAMP web server for a charity which runs CiviCRM on Joomla. This system is going to be accessed over the Internet by many volunteers from devices I have no control over.. ...
31
votes
7answers
4k views

Best practices for securing an android device

Does anyone have any suggestions on securing an Android device? I'm not particularly interested in enterprise level software - I'm looking to secure my own ZTE Blade phone which has a lot of personal ...
2
votes
2answers
89 views

Hardening Javascript in respect to Javascript Malware/Ransomeware like Ransome32

Are there any methods or standards to harden Javascript implementations to help reduce/remediate the the risks associated with Javascript malware like the Ransom32 or other types of Javascript attacks?...
2
votes
0answers
54 views

What measures beyond those for general software, if any, should be taken when preparing a work PC for lunchtime or after-hour gaming?

In some companies (not the one I work for), there are certain groups of employees that have permission of management to play certain games on their office network after the work day has ended. This ...
6
votes
1answer
368 views

SSH ciphers, MAC and key-exchange (and pen-tests thereof)

At work we've been trying to move our external-facing services away from a policy of inclusivity (where we tried to accept as many people as possible) to a more security-focused setup. The first step ...
2
votes
1answer
543 views

PowerShell's Module logging, a few questions

I'm looking for some more information concerning the white paper which goes into some detail over PowerShell's Module logging. Specifically, once this is enabled, are the default cmdlets logged? For ...
2
votes
2answers
50 views

How can I secure the usage of root access on android, given that I have regular updates?

the situation: I use Android 5.1 I'm running the "rooted" variant of fairphone OS, which means that: I can enable Root access in the developer settings, i.e. I don't need to exploit my phone. ...
95
votes
11answers
24k views

Apache Server Hardening

What are some best practices, recommendations, required reading for securing an Apache Server?
2
votes
1answer
35 views

How to disable conntrack protocol parsing in the linux kernel?

Security researcher Jacob Appelbaum suggested to avoid certain code paths in the linux kernel that are related to conntrack that do protocol parsing (such as fdp, sip, etc.) right in the kernel for ...
2
votes
2answers
81 views

Why are SWAP partitions good for security?

This page on server hardening has a large section on adding a SWAP partition. Why is adding a SWAP partition good for server hardening?
1
vote
1answer
86 views

Was my phpMyAdmin hacked?

On a server of mine I have a current version of phpMyAdmin running. Unfortunately (my bad I knew I hat to delete this folder for security after installation, I simply forgot... dangit) I still had the ...
3
votes
1answer
145 views

Gentoo Hardened vs other distros

I was wondering if the hardened profile from Gentoo was really more secure than any other distro (like Debian, RHEL, Arch ...). For those who don't know, Gentoo hardened allows a system to be built ...
89
votes
8answers
12k views

How can I protect my internet-connected devices from discovery by Shodan?

There's been a lot of buzz around this recent CNN article about Shodan, a search engine that can find and allow access to unsecured internet-connected devices. Shodan runs 24/7 and collects ...
2
votes
3answers
167 views

Using more routers makes my PC safer?

I have a router and my ISP provided me a new router. Makes sense using the two as PC -> router1 -> router2(internet) or I'm just slowing (small, 1 or 2ms) my internet for nothing?
26
votes
3answers
15k views

How to secure a MongoDB instance? [closed]

Does anybody have experience with securing/hardening MongoDB server? Check lists or guides would be welcome.
-1
votes
2answers
130 views

Linux kernel security bugs and hardening Ubuntu? [closed]

I recently read some article about the linux kernel having vulnerabilities, I can't recall exactly where. Being new to linux, do you guys have some references on how I should prevent remote access to ...
2
votes
2answers
65 views

What's the distinction between a missed hardening opportunity and security flaw?

It's my understanding that a missed hardening opportunity is less important to be fixed than a security flaw, but what criteria does one use to decide what to classify something that is wrong with a ...
0
votes
0answers
50 views

Applocker rules Publisher vs hash

I'm interested in deploying application white-listing for a large scale environment by using the Windows Server built-in AppLocker mechanism. There is no Internet connection to the environment. My ...
2
votes
1answer
107 views

Is it there any way to detect payloads generated by veil framework

While pentesting, I used to generate a malicious payloads using the veil framework. The generated payload bypasses antivirus & infects the target system. Is there any way to detect veil payloads ...
3
votes
0answers
52 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 ...
3
votes
1answer
2k views

LogJam hardening OpenSSH and testing it [duplicate]

I would like to harden my OpenSSH (clientsite) after the LogJam attack. I read this article https://weakdh.org/sysadmin.html and there is one paragraph, which says how to do that. Is this enough and ...
4
votes
4answers
105 views

Secure environment for servers with sensitive private data

I am developing a web application that will expose a public API to the world, but will store very, very sensitive personal, private data. Having the content hacked would be fatal. I will be using the ...
2
votes
0answers
120 views

Hardening a Chromebook

I have a Chromebook I routinely use for things like e-banking and other things where a security breach would be catastrophic. I've read it is a very secure OS by nature due to its small surface area ...
2
votes
1answer
108 views

Unidentified Filemount in Ubuntu

Not sure if this should go under security or Ubuntu but, I believe that my server got hacked somehow. Its being hosted on Digital Ocean and I mainly use it fiddle around with things. Today, I got a ...
1
vote
0answers
21 views

Scanner to assess hardening of IT System (Network and compute servers) [closed]

Does Symantec Compliance Control Suite helps scanning the servers (windows, Unix), network routers and switches for system hardening of the devices? I believe the typical vulnerability scanners (...
2
votes
1answer
148 views

What is a key-hardened hash?

I've seen the term 'key hardened hash' used to describe a recommended way to tighten up password hashing. What does this mean? Can it just mean to use a pepper?
0
votes
1answer
237 views

Chrome + EMET= How Strong Realistic Protection Against Browser-Based Threats?

tl;dr: How secure is a combination of a sort-of hardened Google Chrome + Microsoft Enhanced Mitigation Experience Toolkit 5.1 against browser-based threats that I do not expect to be highly ...
36
votes
7answers
10k views

Keeping secrets from root on Linux

I am looking for ways to harden a linux system so that even when gaining full root access (through legit or non-legit means), some secrets remain inaccessible. But first a little background. Many of ...
0
votes
1answer
544 views

Command & Control Server List [duplicate]

I recently got an email from my ISP saying that they'd detected traffic to a known Command & Control server from my home. Boo. I'm sure this probably means one of our computers has some awful ...
1
vote
2answers
168 views

Protecting server from bogus HTTP Requests

What would be the recommended approach to block those typical bogus HTTP requests that the server gets bombarded with? Also has this attack/nuisance been named yet or is it generalized as Bot Activity?...
4
votes
4answers
726 views

How can I handle open ports?

After port scanning my company's network, I found a lot of open ports. What are the risks that will result out of these ports, if I left them open? And is there any way to handle them without ...
5
votes
1answer
669 views

Does Linux kernel use DEP for kernel memory?

Does the Linux kernel use DEP internally for its kernel memory? In other words, does the Linux kernel take care to ensure that, when the kernel is executing (in kernel mode), every executable ...
3
votes
2answers
115 views

Where to check if a specific OS / service is vulnerable despite being patched, because of a vendor's decision?

I need to discuss how to mitigate the risk of services which are vulnerable despite being patched (typically because they are not maintained by the vendor anymore, or because the vendor does not want ...
4
votes
1answer
374 views

Does malware which infects the BIOS/ Firmware always need 'root' access to do so?

There are very few hardened Operating Systems who restrict or totally disable Terminal 'root' access for the user. Would this feature prevent persistent BIOS rootkits from writing into BIOS or ...
3
votes
1answer
121 views

Limiting a CA to only issue valid certificates to internal web sites and clients

What are the possible defense measures that can be applied to a simple PKI (no intermediate CAs, etc.) used to authenticate clients and servers over TLS on an internal network only? Certificates ...
4
votes
2answers
298 views

Can a Windows 7 PC with folder sharing and remote desktop disabled, still be penetrated by a rogue computer on the same WiFi or LAN?

Assume the network is already penetrated, and the attacker already fully controls another PC. Other than setting up a proxy to intercept traffic from all other systems on the network and use that to ...
1
vote
1answer
258 views

Is it there any effective way to prevent shodan to access my webcams [duplicate]

Recently while browsing using shodan, I came across a search string to explore webcams. Some of the searches I carried out were: webcamxp city:city name webcamxp geo: longitude and latitude ...
6
votes
1answer
1k views

Hardening SSL/TLS on Azure Cloud Service for A+ on Qualys SSL Labs?

We're using this powershell script as our Azure Cloud Service (PaaS) startup script and we're at an A- on the Qualys SSL Labs test Specifically we're losing points for the following reasons: Forward ...
-4
votes
1answer
122 views

Recommendations about procedures and policies for an application security strategy? [closed]

I need to develop an application security strategy for a web application product. Do you have any recommendations as far as procedures and policies are concerned? Any inputs / guidelines or relevant ...
1
vote
2answers
172 views

What are hardened ACLs for the Windows %systemroot% folder?

What are the recommended file permissions for %systemroot% in Windows 8.1? I couldn't find hardened file system permissions to apply to better secure a Windows installation.
4
votes
1answer
87 views

Should I wipe a brand new Machine and HDD ?

So I am buying a brand new machine and a HDD separate, when I buy this new HDD should I wipe it before I install it ? What necessary steps should I take to make sure it's pretty much clean of any ...
78
votes
9answers
17k views

Hardening Linux Server

We have already had questions on here about Hardening Apache, Hardening PHP and Securing SSH. To continue this trend I am interested in what steps people take to harden Linux servers. As in what ...
0
votes
0answers
53 views

Is it possible to lock guest VMs (or processes) to sticks of physical RAM to prevent row hammer attacks?

I was wondering if it is possible through some means to isolate processes (or preferably guest VMs) to physical sticks of RAM. This would be to prevent row hammer like attacks from using physical ...
1
vote
1answer
66 views

SOP for the CERT in case of hack activity [closed]

I work at a University in the Information Systems Department and recently one of the web server was hacked. the hacker deleted certain databases and few websites were down. In lieu to such events ...
0
votes
2answers
143 views

Can a signed downloaded file be securely verified if you only control the private key and the download/verification algorithm?

I'm designing the update procedure for IP Camera's. I'm wondering if my current design is secure enough. I have a binary file that I want to get to a device. I make a hash of this binary file and ...
8
votes
2answers
4k views

Is server hardening with GRSecurity really necessary on the CentOS 6.3 environment?

I consider myself to be reasonably good with IT, however I am relatively fresh at server and system administration. I am a web developer for my company and I have been charged with setting up and ...
2
votes
1answer
57 views

Secure the config file of a service

I have a service running on a linux box, started with upstart, that runs as user "the_user", it has to read a config file. Having the file owned by root would make things more secure, but would ...
10
votes
3answers
387 views

Do I have to harden IE if I'm only using Firefox?

Assume a Windows 7 system (probably whatever home version comes with the machine), with the latest OS patches, latest IE and latest Firefox. Also assume that the user uses only Firefox for browsing, ...
7
votes
3answers
3k views

Setting up a security CTF server

I'm looking for resources and information from people who have experience running hacking capture-the-flag challenges. To sum it all up in a simple one-sentence question: How do you set up a server ...
0
votes
1answer
446 views

Recent “attack” to my server that might be using shellshock exploit

I just notice this repeated entry in nginx log: 31.184.194.114 - - [04/Mar/2015:10:29:53 +0700] "GET /cgi-bin/up.cgi HTTP/1.1" 301 178 "-" "() { :;};/usr/bin/perl -e 'print \x22Content-Type: text/...