Category: Uncategorized

Random Numbers:

• Total Strands: 98, 4 each Red/Blue/Green/White, 2 Meteor
• LEDs: 9,888
• Controllers: 1x Pi Zero, 1x RS-485 Repeater, 14 RS-485 Controllers

Looks like the password phishers are finally starting to learn proper grammar and piece together something kinda convincing. Here’s a breakdown on one that I had reported to me over the UMD holiday break. It’s notable for a few reasons:

• Timing – it was sent over holiday break when lots of academics will be working, but normal administrative/IT staff is off.
• ‘Realness’ , from copies of UMD’s actual page to references to actual IT help email addresses and phone numbers it passes the sniff test.
• Attention to detail – Lots of the domain names, etc are put together in a way that won’t raise an alarm to most folks.

Step 1, The email

Here’s the actual email received from these guys. A few things they got correct:

• The signature information (sans Access & Delivery Services department) is all real and correct.
• The name of UMD’s IT helpdesk and the included email is correct.
• Most of the display part of the URL is correct and UMD does have a CAS sitting at /cas/login with the obvious switching of lib and edu.

Step 2, the URL

Step 3, The login

The login they created for this account is a pretty convincing copy of UMD’s actual CAS login page. The top/forged one uses graphics from UMD. Looking at the source, the login form has been modified to send the response to save.php.

If you go to the root domain, edu-lib.ml, there are a half a dozen other universities listed with what I’m assuming are forged copies of their login pages. Entering any username and password into the password field results in a message saying your services have been activated and a link back to UMD’s library main page.

Overall, I’d have to give this one a B+ for the realness factor. Sadly, it probably picked up quite a few accounts given timing, etc.

Quick hack to have a bounded slider in Konva 

(Hardware updated 10/2016)

Our standard Adobe Connect, Skype and Lync compatible conference configuration is designed to provide skype-quality audio and video in and out of a conference room. While a more advanced, high end system would be nice, the types of hardware/software that our ever changing endpoints make that prohibitively expensive. Instead, we rely on most current software’s ability to provide decent full duplex built-in echo cancellation. Flash, Skype and Lync all do this pretty well, we’ve had some difficulty with Webex and early releases of Google Hangouts.

Our goal is to provide complete audio coverage for any participant sitting at a table in our conference room. As our meetings tend to be mostly round-table style discussion a rule of one microphone for every two people allows us to pick up normal conversation-level speech.

Our requirements are that we allow remote participants virtually join meeting in conference rooms ranging in size from 8 through 24 people. Realistically for groups larger than 16-18 the logistics of ensuring that remote participants are fully included in a meeting starts to break down. Distance to TV, etc start to have an detrimental effect on the ability of remote participants to be heavily engaged in a meeting.

Video:

• Logitech C930E  ~$150
• Tripod  ~$24
• We now use the Logitech PTZ Pro HD camera (~$900) mounted above or below the TV. (10/2016)

Audio:

• Microphone, Audio-technica Pro44 ~$93. (1 per two participants)
  • For hanging coverage, we use the Pro45 mounted ~6′ from participant and the same number of mic’s. (10/2016)
• Stage box ~$60-$100 (1/automixer).
• Auto-Mixer, Shure SCM410 ~$690 (1 per 4 microphones) or the Rane AM2 automixer (10/2016)
• 3.5mm to XLR cable (pc to auto-mixer)
• Isolation transformer RapcoHorizon ISOBLOX and xlr 1′ extension for when automixer is NOT on same card/power strip or hum present. (10/2016)

Television/Stand:

• Stand to hold 32″-60″ flat screen, Peerless Universal Cart ~$490 (Updated 10/2016 $400 from B&H) 
• 60″ television, Samsung UN60 ~$1,100 – Any TV w/ VESA mounts and HDMI in.
• PC with HDMI out.

Misc Parts:

• Velcro straps and carpet cover
• Under-table clips for microphone cables
• wire wrap

Total Cost (no PC): ~$3,000 $3,700 (8 person) – $5,150 $5,850(24 person)

Here’s a good tutorial on using jax-rs to return smartclient compatible data sources.