the stream

SPF checks the envelope sender only. [..]

DKIM doesn't by default check anything except that the headers and body that
were signed have not been altered since the signature was added. It definitely
has nothing to do with the envelope sender. [..]

DMARC adds sender policy to both mechanisms. For DMARC to pass, either SPF or
DKIM must pass and the identifier must be aligned with the header From:.

So for DMARC+SPF to pass not only must the message come from a source
authorized by the envelope sender domain, but that domain must be the same
domain (or parent domain or subdomain) of the header From: address.

For DMARC+DKIM to pass, the DKIM signature must pass and the DKIM signing
domain must be the same domain (or parent domain or subdomain) of the header
From: address.

Again, DMARC requires only one or the other mechanism to pass. So messages
forwarded intact should be OK if they have an aligned DKIM signature.

Mailing lists run by mailing list software usually alter the envelope sender.
They can therefore create and pass their own SPF policy. However, if the From:
address is preserved, this will not be an aligned message and will not pass
DMARC+SPF.

It's dawn and there's fog in Rotterdam harbour
And the guard's on his break and the dogs are chained by the wire
Three figures come out from behind the cranes
And make it across the train tracks
Clamber aboard a Panamanian freighter headed for the Isle of Grain
Find a place to hide in a stack of containers - another payload of World Trade
Because goods are free to move but not people
Oil is free to move but not people
Jobs are free to move but not people
Money is free to move but not people

NMAP is an ideal choice for port scanning, but sometimes it may not be a feasible option. Other times a quick check to see if a port is open might be all the detail needed. In these scenarios PowerShell really shines. Let's examine methods to use PowerShell for basic port scanning functionality.

We detected nearly 100 FBI fixed-wing planes, mostly small Cessnas, plus about a dozen helicopters. Collectively, they made more than 1,950 flights over our four-month-plus observation period. The aircraft frequently circled or hovered around specific locations, often for several hours in the daytime over urban areas.

We also tracked more than 90 aircraft, about two-thirds of them helicopters, that were registered to the DHS [..]

After the Heartbleed bug revealed in April 2014 how understaffed and under-funded the OpenSSL project was, the Network Time Foundation was discovered to be one of several projects in a similar condition. Unfortunately, thanks to a project fork, the efforts to lend NTP support have only divided the development community and created two projects scrambling for funds where originally there was only one.

[..]

The effort to rescue NTP started becoming complicated when Stenn approached the Internet Civil Engineering Institute (ICEI) for funding and ended up attempting to collaborate with ICEI representatives Eric S. Raymond and Susan Sons. Accounts differ about exactly what happened, but the collaboration was unsuccessful.

SixXS will be sunset in H1 2017. All services will be turned down on 2017-06-06, after which the SixXS project will be retired. Users will no longer be able to use their IPv6 tunnels or subnets after this date, and are required to obtain IPv6 connectivity elsewhere, primarily with their Internet service provider.

Not only does the API fail to provide consistently formatted responses, it doesn't even provide a way to discover its version. Cisco advised me to scrape the 'show version' CLI output in order to know how to parse the API's responses.

The hack began with a spear-phishing email sent in early 2014 to a Yahoo company employee. It's unclear how many employees were targeted and how many emails were sent, but it only takes one person to click on a link, and it happened.

It was possible to create a URL that when loaded by a user who was logged into their Facebook account would redirect a nonce for their account to another site. The nonce could then be used to create a messenger.com session for the user. Since messenger.com session cookies are interchangeable with facebook.com this gave full access to the user’s Facebook account.

We may not know the specifics, but we do know that somewhere out there someone is tracking us online: in fact, most of the data monetization machine is invisible to consumers — the individuals whose data fuels it.

All this has, understandably, left many people wary. Why WOULD you trust someone or something that is gathering information on you with no real insight into how it will be used?

The consequences of this could be devasting to the economy. If do not understand how their data will be handled and used and therefore don’t trust online transactions, online business will wither and die.

Do C2 master and bot have heartbeat communication?

Yes. The heartbeat will involve sending and receiving the same 2 bytes of data (content is 0x0000). The interval time is about 60 seconds and the maximum timeout is 180 seconds.

What are the characteristics in GRE IP/ETH flood？

GRE ETH flood adds a custom ETH layer then GRE IP flood; the ETH layer is randomly filled. The destination IP in the packet is also randomly filled if it is not specified in the command.

A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges. [..]

An attacker could exploit this vulnerability by sending malformed CMP-specific Telnet options while establishing a Telnet session with an affected Cisco device configured to accept Telnet connections. [..]

This vulnerability was found during the analysis of documents related to the Vault 7 disclosure.

Our contributions: To summarize, this paper makes the following contributions:

* A systematic analysis on 191 Xen vulnerabilities (Sections II and V).
* Nexen, a novel deconstruction of Xen into a securitymonitor, shared service domain, and sandboxed per-VM slices (Section III) implemented in Xen (Section IV) that efficiently uses paged based isolation mechanisms for fine-grained data isolation.
* As informed by the analysis, a novel least-privilege decomposition strategy that places highly vulnerable code into per-VM slices while maintaining high performance and either eliminating vulnerabilities entirely or confining exploits (evaluated in Section V).
* Efficient code, memory, and control-flow integrity enforcement between Xen and VMs (evaluated in Section VI).