Chromium 90.0.4430.72 x86 from Ubuntu Xenial repository
HandyCache 1.00 RC4 (1.0.0.885) Registered, SSL Proxy, Wine 6.0
From http://handycache.ru/component/option,com_remository/Itemid,2/func,startdown/id,66/
Unauthorized requests at application startup
All bad checkboxes are unchecked in the settings, start page is blank, search engines removed

Addons:
ublock 1.37.2 28 Jul 2021 id=cjpalhdlnbpafiamejdnhcphjbkeiagm 9.7 MB
OrangeMonkey 1.0.3 22 Jul 2021 id=ekmeppjgajofkpiofbebgcbohbmfldaf 1.6 MB
no extension updates

Chromium 90 Ubuntu Cold start 1 Sep 2021 (Previous start 24 Aug 2021, 8 days ago)
17 requests

Domains:
accounts.google.com
update.googleapis.com
storage.googleapis.com (this URL from update.googleapis.com)
edgedl.me.gvt1.com (this URL from update.googleapis.com)
translate.googleapis.com
www.gstatic.com

1)
https://accounts.google.com/ListAccounts?gpsia=1&source=ChromiumBrowser&json=standard
POST request, answer: gaia.l.a.r

2)
https://update.googleapis.com/service/update2/json?cup2key=10:1138525725&cup2hreq=1cb38bb0a720eee38de99433824aac69350782ce9e625904325cecc2985e184a
POST, check for extension updates pdafiollngonhoadbmdoemagnfpdphbe","status":"ok"
sends requests X-Goog-Update-Updater: chromium-90.0.4430.72
and X-Goog-Update-AppId

3)
https://update.googleapis.com/service/update2/json?cup2key=10:2865655021&cup2hreq=88f432bc49c0c41d18dc2c7e3421540310b13e71d13042f13a206300e9f8b02c
POST, check for extension updates, return URL's list
sends requests  X-Goog-Update-Updater: chromium-90.0.4430.72
and X-Goog-Update-AppId

4)
https://translate.googleapis.com/translate_a/l?client=chrome&hl=ru&key=AIzaSyDGQzx0c0ptZVDriLi9Wblo2voeLnmPq-o
Language list

5)
https://www.gstatic.com/chrome/config/plugins_3/plugins_linux.json
Plugins list

6)
http://edgedl.me.gvt1.com/edgedl/release2/chrome_component/fb3nzpjgtud2sbqrjyslngclti_20210821.393582368/obedbbhbpmojnkanicioggnmelmoomoc_20210821.393582368_all_RU_advusmvf5ooru2rsuiinf6qhiedq.crx3
HTTP, extension 1.1 MB id=obedbbhbpmojnkanicioggnmelmoomoc
component OnDeviceHeadSuggest

7)
http://edgedl.me.gvt1.com/edgedl/release2/chrome_component/acylmcncrvvz6svbfdq4ke5z7x7q_6826/hfnkpimlhhgieaddgfemjhofmfblmnib_6826_all_m6kwmlyvojrz4fykzsdgaw4inq.crx3
HTTP, extension 24 KB id=hfnkpimlhhgieaddgfemjhofmfblmnib
component CRLSet

8)
http://edgedl.me.gvt1.com/edgedl/release2/chrome_component/f6kstflhl4dfivcv6vynummo7i_2687/jflookgnkcckhobaglndicnbbgbonegd_2687_all_gefkllbt7qjlyah5ohtslv7spe.crx3
HTTP, extension 20 KB id=jflookgnkcckhobaglndicnbbgbonegd
component Safety Tips

9)
http://edgedl.me.gvt1.com/edgedl/release2/chrome_component/ccqwc52cyybdcncouijnt6kpaq_2021.8.17.1300/pdafiollngonhoadbmdoemagnfpdphbe_2021.08.17.1300_all_acatmzocbizfck6xlj6bync6egba.crx3
HTTP, extension 12 KB id=pdafiollngonhoadbmdoemagnfpdphbe
unknown component

10)
http://storage.googleapis.com/update-delta/ggkkehgbnfjpeggfpleeakpidbkibbmn/2021.8.23.1140/2021.8.17.1141/02c3ce4e18a776523bc57802befdf3f2d4319002fbdf88584ee0b08619db23c1.crxd
HTTP, Probably changelog 5 KB crxd file from 2021.8.17 to 2021.8.23

11)
http://storage.googleapis.com/update-delta/jamhcnnkihinmdlkakkaopbjbbcngflc/95.0.4628.2/95.0.4619.2/847e5c15559836032b46b91e679c03c4a38c06162877c2d32abbf4c0d9eeb359.crxd
HTTP, chromium version comparison 5 KB crxd file
Probably changelog
last stable release on 1 Sep 2021 93.0.4577.63
dev versions
95.0.4629.0 - 31 Aug 2021
95.0.4628.0 - 30 Aug 2021 chromium check
95.0.4621.0 - 24 Aug 2021 previous run
95.0.4619.0 - 22 Aug 2021 chromium check

12-17)
https://update.googleapis.com/service/update2/json
POST, unfortunately cache files are replaced, so I can't check the content of answers
6 such requests, last - check for extension updates. Need to use Fiddler proxy
maybe also remote settings

-----

Chromium 90 Ubuntu Hot start 1 Sep 2021
2 requests

https://accounts.google.com/ListAccounts?gpsia=1&source=ChromiumBrowser&json=standard
POST

https://update.googleapis.com/service/update2/json?cup2key=10:3251730262&cup2hreq=09f185a823f3e65469317516808a94b9d190631beba5ac324fc137c5fcd22359
POST, check for extension updates, sometimes returns about 1 KB, sometimes 3-4 KB