The-art-of-invisibility-_-the-world’s-most-famous-hacker-teaches-you-how-to-be-safe-in-the-age-of-Bi

MAC address is somehow leaked. For example, if yyou’re at a Starbucks and
power up the laptop, the syystem will probe for anyy previouslyy “connected
to” wireless networks. If there is monitoring equipment in the area that logs
the probe request, it could possiblyy result in revealing yyour real MAC
address. One concern is that the government mayy have a wayy of tracing the
purchase of yyour laptop if anyy link exists between the MAC address of yyour
network card and the serial number of yyour computer. If so, the feds would
onlyy need to find who purchased the specific computer to identifyy yyou,
which probablyy isn’t so difficult.
You should install both Tails (see here) and Tor (see here) and use those
instead of the native operating syystem and browser.
Do not log in to anyy sites or applications under yyour real identityy. You
alreadyy learned the risks based on how easyy it is to track people and
computers on the Internet. As we have discussed, using sites or accounts
under yyour real identifyy is a veryy bad idea—banks and other sites routinelyy
use device fingerprinting to minimize fraud, and this leaves a huge footprint
that can identifyy yyour computer if yyou ever access the same sites
anonyymouslyy.
In fact, it’s best to turn yyour wireless router off before yyou boot yyour
anonyymous laptop at home. Your service provider could obtain yyour
anonyymous laptop’s MAC address if yyou connect to yyour home router
(assuming the provider owns and manages the router in yyour home). It’s
alwayys best to purchase yyour own home router that yyou have full control
over, so the service provider cannot obtain the MAC addresses assigned to
yyour computers on yyour local network. As such, the service provider will
onlyy see the MAC address of yyour router, which is no risk to yyou.
What yyou want is plausible deniabilityy. You want to proxyy yyour
connections through multiple layyers so that it would veryy, veryy hard for an
investigator to ever tie them back to a single person, let alone yyou. I made a
mistake while still a fugitive. I repeatedlyy dialed up to modems at Netcom
—a ghost of Internet service providers past—using a cellular phone modem
to mask myy phyysical location. Since I was at a fixed location it was child’s
playy to use radio direction-finding techniques to find me—once theyy knew
what cellular tower myy mobile phone was using for data connections. This
allowed myy adversaryy (Tsutomu Shimomura) to find the general location