¡Cuidado con China! Intrusiones en cuentas de correo electrónico.

Google me ha informado de un acceso a mi cuenta a través de un dispositivo móvil, desde China.
Sugiero que cambien la contraseña de vuestras propias cuentas, y revisen la información personal que aportan, y las preguntas de seguridad y las respuestas a ellas elegidas.
Si usasen UNIX/Linux, en la línea de comandos, usen pwgen para generar contraseñas:

Usage: pwgen [ OPTIONS ] [ pw_length ] [ num_pw ]

Options supported by pwgen:
  -c or --capitalize      
        Include at least one capital letter in the password
  -A or --no-capitalize                                   
        Don't include capital letters in the password     
  -n or --numerals                                        
        Include at least one number in the password       
  -0 or --no-numerals                                     
        Don't include numbers in the password             
  -y or --symbols                                         
        Include at least one special symbol in the password
  -s or --secure                                          
        Generate completely random passwords              
  -B or --ambiguous                                       
        Don't include ambiguous characters in the password
  -h or --help                                            
        Print a help message                              
  -H or --sha1=path/to/file[#seed]                        
        Use sha1 hash of given file as a (not so) random generator
  -C                                                             
        Print the generated passwords in columns                 
  -1                                                             
        Don't print the generated passwords in columns           
  -v or --no-vowels                                              
        Do not use any vowels so as to avoid accidental nasty words

Ejemplos:

pwgen -cns                                        
KkEt0x9e 0I6EzY1T Tag6HoJr 4kkMMXxy i0BFcjG1 FQQ7V3fE rhElWE66 X21o8d11
dy1YUfgK gW4k6pSt qYYHQP4V HES0alwO kHKo6Sh6 xAQDb0n4 1JvanFpC vByTK2pi
uh52DZmS cnYJ3RXC 7nw8ff3Y 8tD0EQyx rVPr270e JP0L6xnE rJWW6t3c 8PFjgm9u
2b5yifnW uPj51zhn 9jTKqDLP X98yIWJU MVRzbXw1 0KK7mbYm 5wHkteUX 9d8QdXE5
51H1C392 Zl47qFiR 7Xciu1o9 3TvJfmhT 2bn4grTe TWkLSp6p tjO1FrIB Sdmv2SeA
9czHvgMw MR46fgvK feOfHj0h k5NzArw6 G3rOCcPl anhWH5GF Fe79BYdo 9VnAG0YE
TxdqFn2l V2FlMoTF QCkCC7VU GPrLmP0d yoDJr3qc lvPCOM8K 5j9BXjtD b2KSAhtr
5U5gCocU 1F6tMQCn Kn05ZZQY CNEooH1m 1pGsd5Ik ZsXTsIC3 lNNXLB08 Dj5bZ6DN
f7rzG7dL OcC2SlbG aD41bzZj vZY1Fd6m cPG31F8Z m22K87ze nnxJyPS6 AFa50Vkb
Gn5ziG6K 3s3eJZNN 3qUFK80I CWz5Q0zQ lNSaaCo4 7SBWA2uO 0QboyXaW O8qyWNc5
CaycQ9El Wkru6qtM 1b6GymWr nK4cG18u 8qXhHCor fA3GJcEV XO15HNkE qaO8FV2G
IG9iGhAj j9r41aN4 iSdY8Vf8 NrZS9Ig5 QokB8GZB bcT1FbMY 1tcXAgNw K7kK9Qds
f5hirU2m ZM6NxeYl nUsLuV2U e2YV6HaX vS0jwpv7 k58UAcSM Pw5h4iKB GQb5ZNIR
C1QC931D uQwjIT7E PQKVy50j 2Lg3uVhZ YLpB7gLw 79Unk9KJ F7cVExZd eS3lLUE9
6hV5pQ53 iQZPM7fS 2p9xEs0c WQu81ngU N3p5HQ8S yhpM2z28 V76HYaU8 Tzs5Wf7y
3poBfJ88 7Gd0aTOm UzvsSW2X uT8CjvDi KkZIr7n8 fG28mATQ XfqT0jdO ti9oHGbL
FFB3nEuA Qjtwi9Xg kdggP7l5 wcS4FSVV mL0U4V6o O9HraQh4 dTU4LglE jNEvIc4n
5C67Zs6a srLz38mU gmllBaZ9 M9EzASmf zstLx3u0 953dImdX q1cn3Bdl B9OjQwlm
NRA9K450 eC2WiL5x NGLQJOV4 e3a51PRA l7ax8ERu GOs9SgcF f4oYRtl2 4emGL2m0
0c1BuqTT FjvBbx08 pWe7zkZQ fZ4kXA32 K10JmaEM W269wLDF G8cZnwda ssxS3A0N
pwgen -cny
Aek5kah~ Iet]ie4o Aen9xoR= hou3aiJ} aiB*a6Oh eem=ae8X AiQu\oh9 Aif+i6Ep
ob7fae:G ua?n8Hai ait~ah2I Eube#m9j poh`b4Bo Fi.gh5ai ayae!Pu4 Eth:ain4
hah>Y8nu aiY2ier% aeD5Eo;t si3Oxe[l Weit6ci> Eu=SaG3s Ao;v1eif uzah:c1U
zeeP5sa> Eed+eej4 Ieyie(D3 Aeth:ee7 Ewi4ooM+ oona:oF0 iiF5we$l vu7Su/th
zai'zaK3 Iih0si"e quo=R8ov ieR]i4vo zauN?ae1 xoe^J]a1 Eeco[t4u Aeph,ie8
Phoh{h4z mu0Ohr{o Eebs2Ti Yuuxu@o4 AiNg
ea2dai?Z EiP4eew. vai>v3Oo AL|ohb1P jiu=ho7N ieNg8Eb. Hoo|xoo8 cohi.aK8
Jae?ng7u xoo|Mai4 tu7Uu"ze ob2Eim-u Pei:F0ie AhS{oot5 dexee"K3 ohG2vah\
ooGh8xa) moo't5iM aef/oa7E cu"W3poo zao;W9ke Dei{m8zo ei&l6Ath os&ee7Ph
ooC=i8zu Iek{ooc9 iGh.ei3i hue.R0ch Ie"z5aus Oor)eil0 Ux(ish9x pe3kei@Y
Aen+aib6 maeW/ei6 Ev?aib5i aaFoo?L4 ohY}e3da jo6Aih{a EiB'e6wi eR@o0iu4
AiDoo&m7 Ix]ae0ae aN;ieSh7 Oaj0ahf{ ootee^D8 Eij:ee2a IeR-eed5 AiRie_h8
Soo6eic> oHi~e7Da Aeth%ai1 Aiv^ivu8 ree,S8th Koh~Thu0 tha^L1Xa Hae8Ooc:
Ot`oob6u Mooc@au0 eeZa%a1d dei3ooZ: aeR
Augh.u8A meeY=ie8 ien>aiH0 gol#a6Gi Es}uW3sa ey&i{oB5 ul2Wo`c2 pu"e]Sh1
ab7Ca(a1 Ahtoo(b4 eGh'oo9i Gu>Nioy1 ae1loo}G moM?eN6e ael9aiR~ uo1Aik]e
aiTh4go& ieX:ae8u Waig;ee9 da)ahi3A Ie6gei't ahV#i0pe vohCh\i0 Dah$y3oo
pah6Ien~ ieP~ah8h tae.Ng1u Pie^v4no ahx[u2Xa exae+m6A raib%o0I fe9AhQu#
lei`j8Ux Oe't8xa[ zaSh?ah2 za6Boo(d Aew`ooZ4 Po7Uesh! IY4quae- We=o3rei
Iut2ti

Aconsejo que no usen los anteriores, sino que los tomen como una guía, en caso de no disponer de pwgen...