A man-in-the-middle attack (MiTM) is an attack against a communication protocol where the attacker relays and modifies messages in transit. The parties believe they are talking to each other directly, but in fact both are talking to the attacker.

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Has anyone used this ICLOAK USB device?

Does anyone know about this ICLOAK USB device? Opinions or how well they work? I'm looking for a security solution when I'm using PCs where I work. Occasionally we have to log into to web sites, ...
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2answers
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Payment form from http is secure? [on hold]

There are lot of payment gateways (Worldpay, PayPal, ..) offering easy integration, when the plain webpage using URL redirection to the payment page. HTTPS (worldpay,paypal), where the user posts his ...
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33 views

MitM Chrome Mobile

I just came across the issue about MitM on Opera/Nokia browser 2013. I know, this is an "old" problem, but it seems very interesting to me. I was wondering how Chrome on mobile handles the SSL ...
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39 views

SSL traffic manipulation through ettercap MitM and iptables

I am trying to understand the relation between some tools and concepts used for MitM on a wifi network and how https transaction (over this wifi network) between an android app and the respective ...
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93 views

Risks of using HTTP

What are the risks of using HTTP instead of HTTPS assuming that there isn't any rogue hacker sitting on my personal WIFI network waiting to sniff my traffic? Can a hacker sit in his boat in the ...
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109 views

How does OTR's authentication using “Question and answer” protect against MiTM?

I've read that the answer has something to do Socialist Millionaire, but I still don't understand how can the user be protected against malicious Man In The Middle, which would capture the question ...
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42 views

I need a secure laptop tethered to a mobile internet connection. [on hold]

I invent things. Think energy, IT security algorithms, etc. I'm actively targeted for information breaches by the largest corporations on the planet. All paranoia aside... I'd like a secure ...
2
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1answer
14 views

ettercap use as local proxy [on hold]

Hi everibody and sorry for my english, I'm looking for a way to use ettercap (or another program) to alter TCP traffic (coming from local) on the fly. I used "netsed" with iptables, but netsed is too ...
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6answers
3k views

Possibility to sniff HTTPS traffic on devices without installing a certificate

My goal is to sniff the HTTPS traffic of some digital devices (AppleTV, game consoles, etc.), and decrypt the HTTPS packets in my local network. I cannot figure out a way by using some HTTPS ...
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How can I prevent a man-in-the-middle (MITM) attack on my Android app API?

I checked out the app Packet Capture. This app is able to decrypt my app APIs (SSL Enabled) data by mounting a MITM attack using the Android VPN service. This does not even require root. How can I ...
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1answer
68 views

Arp Spoofing Causing Dropped Connections

I have had a lecture today based on Arp Spoofing. However, i can not get it to work. Scenario: My laptop - running kali Target laptop (housemate - with permission) - running windows 8 Commands ...
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8answers
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Are “man in the middle” attacks extremely rare?

In "Some thoughts on the iPhone contact list controversy and app security", cdixon blog Chris Dixon makes a statement about web security Many commentators have suggested that a primary security ...
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129 views

A certificate site name mismatch when using preinstalled Toshiba software? (Superfish?)

On my Toshiba laptop there are a variety of different Toshiba programs that came pre-installed. Many of them are some sort of utility, optimizer, checkup, and update kind of programs that I guess are ...
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2answers
41 views

ssl_error_bad_certificate_domain, does Firefox still validate the certificate? [duplicate]

I have a private NAS device. It uses a self-signed SSL certificate. I can import the cert into Firefox and everything works as long as I'm accessing the device from somewhere on the internet. SSL ...
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1answer
48 views

Using randomly generated numbers to authenticate with a Relay server

I'm developing a public VoIP relay server, that will help bypass internet firewalls by allowing two clients to connect with it and then it will relay data between the two. Both clients will connect ...
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1answer
48 views

Is it possible to perform one-way OTR MITM?

Here's something that is bugging me recently: suppose that me and my friend establish an OTR session and - as a result of that - DH key exchange is performed. My friend verifies my key, but I cannot ...
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41 views

Decrypting SSL within Multiple Products

I've read the various questions tagged [ssl] and [mitm] and [proxy] and I couldn't find a duplicate. I cannot find any documentation on this subject online. All of the traffic is currently flowing ...
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0answers
38 views

How can MITM be performed in WebRTC?

From what I could tell, certificates are self-signed. When A wants to call B, after they finish relaying data to server, they initiate communication with each other. Certificates are self-signed, ...
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2answers
112 views

Is VPN the best solution against man-in-the-middle attack? [closed]

I'm looking for the best way to protect my enterprise against man in the middle attacks, because a lot of people connect to the same network. So I was thinking of creating a VPN. Is this really the ...
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0answers
146 views

hsts bypass with sslstrip2 + dns2proxy

I am trying to understand how to bypass HSTS protection. I've read about tools by LeonardoNve ( https://github.com/LeonardoNve/sslstrip2 and https://github.com/LeonardoNve/dns2proxy ). But I quite ...
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0answers
16 views

Mitigating the risk of disabling EPA on ADFS

I'm currently investigating the deployment of an Active Directory Federation Services (ADFS) server for providing Single Sign-on for various services. By default, ADFS enables support for Extended ...
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2answers
116 views

Mitigation against MITM at Starbucks

Free public WiFi, for example Starbucks, is convenient. I wonder if there is a way to verify that a laptop has connected to the Starbucks wireless router and not to a man in the middle that tricked ...
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2answers
84 views

What are you doing if you notice a MITM attack against a Linux server? [closed]

I got this question at a job interview, but I did not know the answer. I think they expected some shell command or packages, which can help react to the attack. Assume that, you are a system admin and ...
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30 views

Choosing a cipher and MAC for an SSH connection

The cipher and mac selection according to this are in some sort of order in a config file. How do the client and server know that they are using the same ones though? Is this information exchanged in ...
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1answer
149 views

Why crack WEP or WPA/WPA2 PSK when it can be sniffed through monitor mode capture?

I am pretty new to the domain of wireless security and am trying to understand the various techniques used for compromising wireless networks. There are a few things that I am not able to co-relate ...
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1answer
123 views

Is it possible to intercept traffic by using a WAN facing DHCP server on an ISPs cable network?

I am running pfSense on an edge firewall conncted to a cable line. I can see many DHCP requests hitting my firewall. I guess this requests are getting send by cable modems currently booting up and ...
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1answer
34 views

User Key pairs and Man-in-the-middle issues

I'm trying to wrap my head around how to exchange user's keys with a server. Maybe during sign-up a JS applet generates a key-pair for the user. These keys would be used for signing subsequent ...
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4answers
820 views

Is webRTC safe against man in the middle attacks?

We are implementing an open source software package (copay, a multisig bitcoin wallet), that uses peerJS, which uses webRTC to allow peer-to-peer communication between browsers. peerJS (and webRTC) ...
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2answers
39 views

How can I detect mode interface of other machine is promiscuous [closed]

I have a project that is to protect my box from attack man in the middle arp poison. I should detect if interface mode of other machine is promiscuous. I must write script python or command linux.
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5answers
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Can I detect a MITM attack?

Based on this question here: Are "man in the middle" attacks extremely rare? Is it possible to detect man-in-the-middle attacks, and if so, how would one go about it? In addition, what if ...
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0answers
17 views

Combining Hash Visualisation (VisualHostKey) and SiteKey to prevent MITM

TL;DR Skip to the No SiteKey + Plugin if you don't want to read this whole thing. VisualHostKey shows an SSH hash like this: # Host github.com found: line 53 type RSA 2048 ...
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39 views

Combining wildcard and subdomain-specific SSL certificates

Not quite sure which Google terms to use to find the answer, so I thought I'd ask it here, presented as a scenario: Say you have a corporate entity (Example Co) with a wildcard SSL cert issued for ...
18
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1answer
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How does SSLstrip work?

I've been reading up on SSLstrip and I'm not 100% sure on my understanding of how it works. A lot of documentation seems to indicate that it simply replaces occurrences of "https" with "http" in ...
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1answer
874 views

Is Man-In-The-Middle necessary for a CA to read HTTP plaintext?

Although I understand the basic theory behind certificates and asymmetric cryptography, I'm not quite sure on the details of the X.509 protocol. I'm wondering what attacker model a given CA requires ...
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4answers
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In light of the FREAK TLS vulnerability, why do so many servers still offer RSA-EXPORT keys?

Ars Technica is reporting on a new attack against HTTPS. Called FREAK, the devices reported as vulnerable include iPhones, Android devices, and Macs running OS X. The attack (as has been clarified ...
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423 views

With a 'man in the middle' attack, can the attacker find out Client/Server session keys with a compromised AS/TGS secret key?

Assuming that an AS/TGS secret key has been compromised by a 'man in the middle' attack who in turn can monitor the network traffic, is an attacker able to find out the Client/Server session keys ...
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1answer
80 views

How to properly test that an OpenVPN connection is secured?

I have a router (ASUS RT-AC66U) with an embedded OpenVPN server. I'm able to successfully connect to the OpenVPN on the router, as well as, access internal services in my home network; However, ...
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1answer
17 views

dm-crypt over iSCSI

I recently bought a NAS that supports iSCSI. I'd like to create a new LUN, and then from my computer, create a new dm-crypt/LUKS device on it and back up to it. Is this secure? Could the data or ...
2
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2answers
198 views

If your company/university requires you to install root certificates what protects you from man in the middle attacks?

Let's say that I'm on a university (or company) network that requires you to install a root certificate to connect to their website. Now let's say that you trust these people but not anybody else. Is ...
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2answers
80 views

Can a school legally access an account that a student logged in to at school? [closed]

Is this scenario legal, A school has a few public computers that can be used. The only browsers that are installed are chrome and internet explorer, and the entire network is man-in-the-middled. ...
4
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5answers
4k views

Is there a method to detect an active man-in-the-middle?

Suposing an attacker that has gained access to the router. Is there a way, for the victim, to notice that is being attacked? I think one of my friends is a victim of this kind of attack. How can I be ...
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0answers
23 views

Usefulness of checking MS-CHAP-Challenge by TTLS Server

I've spotted what may be a "missed opportunity" in the EAP-TTLS specification for "Challenge"-based authentication protocols (for instance MS-CHAP-V2). The client initiates MS-CHAP-V2 by tunneling ...
4
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4answers
101 views

What's to stop someone from just MITMing a checksum?

A lot of sites offer MD5 or SHA sums to verify the validity of your download, but why do some things rely almost entirely on this? Is there anything in place to prevent people from just replacing ...
0
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2answers
63 views

Is it possible to take back the control from an MITM in progress? [closed]

I heard that MITM also involves DNS poisoning, which basically tells the Net to take a different route than it was supposed to go.. (I'm not sure if my interpretation is correct..) Given there is an ...
22
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3answers
2k views

Superfish vs. Corporate MITM

I work for a consulting company, and I have been implementing a tool from a security vendor, which is a cloud proxy for all user traffic. It will perform malware scanning and filtering of all web ...
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1answer
81 views

Public WiFi behavior

Here's an observation: My apartment offers free wifi around the social congregation areas. It is not encrypted BUT as I have observed, each connecting device is confined to its own VLAN (based on MAC ...
9
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1answer
356 views

Kaspersky Antivirus “secure connection scan” as broken as Superfish?

I've read a lot about Superfish (and similar ad-ware) lately and I basically understand the vulnerability to MITM attacks. But I'm actually wondering if the "secure connection scan" by Kaspersky ...
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1answer
235 views

Intercepting HTTPS Android app traffic

I'm trying to intercept Android application traffic from my Android phone....Basically what worked before was that i had simply installed fiddler proxy on my PC, exported the root certificate (and ...
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2answers
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How do certificates stop this man in the middle attack?

Alice and Bob are trying to set up a secure conversation, but unknown to them in the middle is Eve, who can intercept and modify all packets sent between them. The communication goes as follows: ...
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2answers
60 views

Two-way encryption that can be nested?

In building a security system, I'm looking to prevent 'man-in-the-middle' attacks in a two-way encryption system, using the following setup: A sends B a message, encrypted with code 1 B sends it ...